Log of /branches/rel-2-1-patches/pg

Sticky Revision:

Revision 3083 - Directory Listing
Modified Fri Jan 7 20:42:09 2005 UTC (8 years, 4 months ago) by sh002i

HEAD backport: Defined some variables that were causing warning
messages. (gage)

Revision 3082 - Directory Listing
Modified Fri Jan 7 20:40:51 2005 UTC (8 years, 4 months ago) by sh002i

HEAD backport: Avoids some name collisions for images converted from gif
to png in hardcopy (jj)

Revision 3081 - Directory Listing
Modified Fri Jan 7 20:39:02 2005 UTC (8 years, 4 months ago) by sh002i

HEAD backport: relative tolerence was not being used correctly. Fixed
this. (apizer)

Revision 3080 - Directory Listing
Modified Fri Jan 7 20:37:48 2005 UTC (8 years, 4 months ago) by sh002i

HEAD backport: Fixed a bug in processing absolute values with implicit
multiplication. (dpvc)

Revision 3078 - Directory Listing
Modified Fri Jan 7 20:19:02 2005 UTC (8 years, 4 months ago) by sh002i

HEAD -> rel-2-1-patches backport: "Fixed an error where any plane is
accepted if the d is 0 in ax + by + cz = 0." (dpvc)

Revision 2993 - Directory Listing
Modified Wed Nov 10 18:02:44 2004 UTC (8 years, 6 months ago) by sh002i

Ability to control missing tex fonts message (from HEAD).

Original log message:

Modifications needed for the control of jsMath's "missing font"
message.

Revision 2980 - Directory Listing
Modified Wed Nov 3 19:52:01 2004 UTC (8 years, 6 months ago) by

This commit was manufactured by cvs2svn to create branch 'rel-2-1-patches'.

Revision 2972 - Directory Listing
Modified Tue Nov 2 20:47:23 2004 UTC (8 years, 6 months ago) by sh002i
Original Path: trunk/pg

added README and LICENCE files.

Revision 2969 - Directory Listing
Modified Tue Nov 2 01:55:21 2004 UTC (8 years, 6 months ago) by dpvc
Original Path: trunk/pg

Fixed typo in a comment.

Revision 2958 - Directory Listing
Modified Sun Oct 24 14:36:35 2004 UTC (8 years, 6 months ago) by jj
Original Path: trunk/pg

This seems to fix bug 713.  I don't see why one would want the line below
commented out.

Revision 2957 - Directory Listing
Modified Sun Oct 24 14:33:36 2004 UTC (8 years, 6 months ago) by jj
Original Path: trunk/pg

Make combinations function C(n,k) return 0 when k>n, which is standard.
Maybe P(n,k) should do the same instead of throwing an error?

Revision 2938 - Directory Listing
Modified Tue Oct 19 00:24:47 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

Added reduction rules to remove redundent negatives.
Override string and TeX methods that avoid redundent parentheses.

Revision 2937 - Directory Listing
Modified Tue Oct 19 00:23:01 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

Added "areParallel" method as a synonym for "isParallel".

Revision 2936 - Directory Listing
Modified Tue Oct 19 00:22:07 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

Don't promote an object unless it is a Value object.

Revision 2935 - Directory Listing
Modified Tue Oct 19 00:20:02 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

Prevent automatically reducing negatives in student answer, so the
sign doesn't change behind our back.

Revision 2934 - Directory Listing
Modified Tue Oct 19 00:15:54 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

Handle error messages better.  Produce an error if the student answer
is a constant vector.  Prevent reduction of some negatives in order to
avoid -(a+bt).  Allow students to provide answer in terms of points
rather than vectors.

Revision 2933 - Directory Listing
Modified Tue Oct 19 00:11:50 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

Changed the order of variables in calls to Plane() so that it
corresponds to the usage in ImplictPlane().  Also fixed a typo in
capitalization of @N.

Revision 2932 - Directory Listing
Modified Tue Oct 19 00:08:04 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

Updated i(), j() and k() functions to check if the Parser is loaded,
and if not, return a value that will cause perl to report a better
error than calling the parser outside of its normal context.

Since the current answer checkers call perl directly to evaluate their
expressions, when a variable is used by a student that is not a
variable used by the checker, this can cause perl to try to parse
those variables as function calls, or other perl constructs (like
matches if you use 'm' or translations if you use 'y').  This is bad
(and is not a problem with the new parser).

In particular, if the student uses 'k' in a formula for which k is not
defined, for example, perl will try to call the k() function.

Revision 2916 - Directory Listing
Modified Wed Oct 13 18:41:07 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

Clear error messages before doing the answer check (this clears old
messages left over inclass this checker is called by another one,
e.g. when using UNORDERD_ANS()).

Revision 2915 - Directory Listing
Modified Wed Oct 13 03:31:17 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

Trap errors in functions that are not native perl functions (like
acos() and csc(), etc.).  In the past, if an error occurred within the
definition of a function, the error message that was reported was the
internal error within the definition of the function.  For example
csc(0) would report "illegal division by zero", while acos(-2) would
report "can't take sqrt of -3".  Now the errors will be "can't take
csc of 0" and "can't take acos of -2".

Revision 2914 - Directory Listing
Modified Wed Oct 13 02:41:33 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

Added support for useBaseTenLogs to make log() work like ln() or
log10() depending on the value in the course.conf file.

Also fixed a bug that caused the WeBWorK parameters not to be
copied into contexts by initCopy().

Revision 2912 - Directory Listing
Modified Wed Oct 13 01:35:51 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

Fixed typo in the comments.

Revision 2909 - Directory Listing
Modified Tue Oct 12 20:49:25 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

In Complex context, make sqrt() and log() of negative numbers return
their complex values.  Also make ^ and ** do the same with negative
bases.  These can be controlled by setting/clearing the
"negativeIsComplex" entry for these functions and operators.

Revision 2908 - Directory Listing
Modified Tue Oct 12 20:46:43 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

Report errors for powers of negative numbers rather than return 'nan'.
Don't allow 'nan' to be made into a Real object.

Revision 2907 - Directory Listing
Modified Tue Oct 12 20:44:20 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

In StandardPrecedence mode, make the precedence of function apply
match that in use by that AlgParser.

Revision 2900 - Directory Listing
Modified Tue Oct 12 00:52:47 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

Don't give coordinate hints during parallel vector checks.  Also fixed
a typo.

Revision 2855 - Directory Listing
Modified Sat Oct 2 11:55:31 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

added generic string-only context, and converted contextABCD and
contextTF to use it.

Revision 2842 - Directory Listing
Modified Wed Sep 29 15:47:30 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

Allow string constants to include spaces.

Revision 2832 - Directory Listing
Modified Mon Sep 27 17:47:04 2004 UTC (8 years, 7 months ago) by dpvc
Original Path: trunk/pg

Fix problem with TeX output of implicit multiplication between
items that would put two digits next to each other (like 2 3^2).

Revision 2824 - Directory Listing
Modified Thu Sep 23 21:31:41 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Two new Parser contexts, one for matching problems involving answers
like A, B, C and D, the other for T/F answers.  These contexts have an
advantage over the standard str_cmp() checker in that it will give
additional error messages when the student enters an unrecognized answer.

Revision 2823 - Directory Listing
Modified Thu Sep 23 21:09:14 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Fixed Parser so that you can replace the Formula class as well as the
other object types.

Revision 2803 - Directory Listing
Modified Sun Sep 19 15:11:08 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

The $Parser::class variable was being handled after the "use"
statements at the end, so had to put a BEGIN around it.

Revision 2802 - Directory Listing
Modified Sun Sep 19 14:43:32 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Eliminated unneeded parentheses in TeX output when unary minus and
plus are used with fractions.

Revision 2801 - Directory Listing
Modified Sun Sep 19 14:41:57 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

More changes for the isZero and isOne checks.  (Missed this file when
I committed the others.)

Revision 2800 - Directory Listing
Modified Sun Sep 19 14:27:39 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Added isZero and isOne checks for Parser::Value objects (i.e., for
constants within formulas).  These now correctly handle vector and
matrices, in particular.  The isOne and isZero checks are used in the
reduce() method to simplify formulas.

Revision 2799 - Directory Listing
Modified Sun Sep 19 11:49:32 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Added a new flag to the Formula()->cmp answer checker that allows a
constant-valued formula to be evaluated and then use the checker for
the resulting type.  This is useful when you want the correct answer
for a numeric check to be shown in a symbolic form (like "pi/4")
rather than as a decimal number.  To do this, use

       Formula("pi/4")->cmp(eval=>1);

rather than Real(pi/4)->cmp, which would show the correct answer as
0.785398.  Note that Formula("pi/4")->cmp would also match against
pi/4, but it does it as a function rather than a number, so error
messages might be issued indicating that the checker is expecting a
formula that returns a number, rather than just a number; this might
be confusing to a student.  It would also accept answers like
"pi/4-x+x" as correct, whereas with eval=>1 this would produce an
error message saying that the answer was supposed to be a number not a
formula returning a number.

Similarly, if you want to show sqrt(2)/2 as the correct answer, use

     Context()->flags->set(reduceConstants=>0, reduceConstantFunctions=>0);
     Formula("sqrt(2)/2")->cmp(eval=>1);

The first line tells the parser not to automatically reduce
expressions that only involve constants, so that the value of the
formula in the second line will not be reduced to a decimal before
the cmp method is called.

Revision 2798 - Directory Listing
Modified Sun Sep 19 11:29:06 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Make Formula()->eval return a Real (ie, aValue::Real object) rather
than a perl number.  That way, you can use $f->eval->cmp rather than
needing Real($f->eval)->cmp, and so on.

Also make Formula()->perl do the same, for consistency.

(This could have been accomplished by having the Parser::Number class
evaluate to a Real, but for efficiency during computation, we put
off making the Real object until the end.  It probably doesn't make
that big a difference, but every little bit helps.)

Revision 2797 - Directory Listing
Modified Sun Sep 19 01:16:10 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

File needed to reduction flags that was accidentally left out of the
previous commit.  Sorry!

Revision 2796 - Directory Listing
Modified Sun Sep 19 01:15:03 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Added flags that control the reductions performed by
Formula()->reduce.  Each reduction operation can be individually
enabled or disabled in the context, and in the reduce() call itself.

More complex reductions need to be developed.

Revision 2795 - Directory Listing
Modified Sat Sep 18 23:16:37 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Fixed typo in addParens method name.

Revision 2791 - Directory Listing
Modified Thu Sep 16 23:43:54 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Don't reduce constants in the display of student answers (so they can
tell how the parser interprets their answer).  The drawback is that
the final number is not displayed.  (We may need to add more columns
to the results display.)

Revision 2790 - Directory Listing
Modified Thu Sep 16 23:03:03 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Use extra parens in the string version of the student's answer, but
not in the professor's (unless the problem sets the showExtraParens
flag).

Revision 2789 - Directory Listing
Modified Thu Sep 16 22:24:32 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Added context flags to control automatic reduction of operations that
involve only constant values.  The default is to combine constants,
but this can now be disabled.

Also added a new flag to control the addition of extra parentheses
that make string values painfully unambiguous (these are for
situations that students tend to get wrong).  By default this is
turned off (so that professor answers won't contain excessive
parentheses), but the answer checker will be made to turn this on for
student answers.

Finally, when extra parens are added to formulas, they alternate
between ( ) and [ ] to make it easier to read.

Revision 2788 - Directory Listing
Modified Thu Sep 16 22:19:59 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Produce an error when attempting to auto-create a formula using a
function that has been removed from the current context.

Revision 2781 - Directory Listing
Modified Tue Sep 14 21:36:45 2004 UTC (8 years, 8 months ago) by apizer
Original Path: trunk/pg

Fixed bug with useBaseTenLog

Arnie

Revision 2772 - Directory Listing
Modified Sun Sep 12 11:11:47 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Make partial credit in list answer checkers be the default (now that
WeBWorK can handle this).

Revision 2771 - Directory Listing
Modified Sat Sep 11 17:11:29 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Fixed a bug with constants where the values were being cached so that
changes in the context were not being reflected in the formulas that
use them.

Revision 2768 - Directory Listing
Modified Fri Sep 10 23:55:31 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

When creating formulas from functions, don't evaluate even if the
formula is constant.  (This makes it possible to create automatically
create formulas even if they only contain constants.)

Revision 2757 - Directory Listing
Modified Fri Sep 10 14:50:14 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

No longer produces the message that there are too many answers if
hints are being shown about individual entries in a list.  (This gave
away the answer about which ones to remove.)

Revision 2756 - Directory Listing
Modified Fri Sep 10 14:48:35 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Changed the error message produced for functions that have been
removed from the parser.  I hope this will be more appropriate for
students.

Revision 2746 - Directory Listing
Modified Wed Sep 8 02:00:52 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Fixed error where AlgParser produces \sech and \csch, which are not
defined in TeX.  This fixes bug #665.

Revision 2733 - Directory Listing
Modified Sat Sep 4 20:45:31 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

This file defined an answer checker for lists of variable names
(ordered or unordered, and optionally enclosed in parentheses).  You
can use this answer checker for questions that give a system of
equations and ask which variables are the dependent and which the
independent variables, for example.

Revision 2732 - Directory Listing
Modified Sat Sep 4 20:42:45 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

This file provides an answer checker that determines whether two
students answers compose to form a given function.  The student
answers are not allowed to be the identity function, or a function
that is trivially generated from the composition.

See the comments within the file for details about how to use it.

Revision 2731 - Directory Listing
Modified Sat Sep 4 20:40:43 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

This file defines a NumberWithUnits class for that provides an answer
checker for numbers with units.  It uses the same units package that
the standard answer checkers use, but this will eventually be replaced
by a more complete Units class within the parser itself.  The class
produces a preview string in which the units show appropriately.

Revision 2730 - Directory Listing
Modified Sat Sep 4 20:31:55 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

This file defines a DifferenceQuotient class that provides an answer
checker for difference quotients.  These include a variable "dx" (or a
user specified one) that can be used as part of the formula, and the
student must simplify the answer at least enough to remove the dx from
the denominator.

Revision 2729 - Directory Listing
Modified Sat Sep 4 20:29:52 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

This file provides some convenient tools for generating random points
and vectors that are not the zero vector, plus some other misc. utilities.

Revision 2728 - Directory Listing
Modified Sat Sep 4 20:28:33 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

This file defines a ParametricLine class that provides an answser
checker for lines in any dimension given parametrically.  The answer
checker will recognize the line even if the point and direction vector
used by the student are not the same as the ones used by the
professor.

See the comments within the file for examples of how to use it.

Revision 2727 - Directory Listing
Modified Sat Sep 4 20:26:23 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

This macro file defines an ImplicitPlane (and inplicit line) class of
Parser object that provides an answer checker for planes (or
hyperplanes in any dimension) of the form ax + by + cz = d.  Students
can provide their answer in any (linear) form that is equivalent to
this.

The class accepts several formats for specifying the correct-answer plane.

Revision 2726 - Directory Listing
Modified Sat Sep 4 20:21:32 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

These files provide contexts for the Parser in which only limited
operations are allowed.  The LimitedNumeric context is analogous to
strict_num_cmp().  The other contexts are similar, but for the
indicated type of answer.  In the LimitedVector context, for example,
the student can enter vectors, and can perform numeric operations
within the coordinates of the vectors, but can't perform vector
operations like vector addition or cross product.

Revision 2701 - Directory Listing
Modified Sat Aug 28 15:53:09 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Only convert (f(x))^2 to f^2(x) for specified functions f
(as marked in the Context).

Revision 2698 - Directory Listing
Modified Sat Aug 28 13:52:33 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Add better error reporting in PG translator.  In particular, these
changes add two new features:

	1)  produce a full stack trace when a .pg file dies, and
	2)  convert (eval nnn) references to filenames, when
	    possible, in warn and die messages while processing a
	    .pg file.

There is also a change in the webwork tree that is needed to make this
all work, so be sure to apply updates in both trees.

Revision 2697 - Directory Listing
Modified Sat Aug 28 12:43:57 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Two more minor TeX improvements.

Revision 2696 - Directory Listing
Modified Sat Aug 28 12:34:56 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Improved TeX and string output in a number of situations.  Improved
use of parentheses to avoid things like x+-3.  Fixed wrong parentheses
in powers.  Display (sin(x))^2 as sin^2(x) in TeX output.

Revision 2692 - Directory Listing
Modified Fri Aug 27 21:49:36 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Use the current context if the answer doesn't have one itself (like
with Value objects).

Revision 2688 - Directory Listing
Modified Fri Aug 27 19:42:59 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Added in functMaxConstantOfIntegration support in the adaptive
parameter answer checking.  Also added a flag to the formula answer
checker that allows checking a formula up to a constant (for
integration problems).  This really just adds a new parameter to the
context and adds that to the formula, so there is nothing deep about
this.

	ANS(Formula("2x")->cmp(upToConstant=>1));

Finally, don't look for adaptive parameters if they aren't actually
used in the professor's formula (even if they are defined).

Revision 2687 - Directory Listing
Modified Fri Aug 27 00:28:27 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Added ability to have linear adaptive parameters in the function
answer checker.  It only works for real-valued functions, though.
To use a parameter, use

       Context()->variables->add(a=>'Parameter');

and then use 'a' as a variable within your answer.  The student will
not be allowed to enter the parameter, but the professor will.

Note that the correct answer will show the full professor's answer,
including the parameters, even though the student can't type it.  Is
this the right behaviour?

Revision 2684 - Directory Listing
Modified Tue Aug 24 21:35:21 2004 UTC (8 years, 8 months ago) by dpvc
Original Path: trunk/pg

Added the makeUnion call that was removed earlier.  The AnswerChecker
for formulas sometimes called it (when the student's answer is constant).

Revision 2682 - Directory Listing
Modified Tue Aug 24 03:36:54 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Fixed a bug with  sin^2 x  that introduced when I adjusted the
error report for implied multiplication.

Revision 2681 - Directory Listing
Modified Tue Aug 24 03:34:47 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

TeX mode now adds parentheses around fractions, when needed.

Revision 2680 - Directory Listing
Modified Tue Aug 24 03:33:30 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Made string function look for a string field in teh definition of the
function as an override for its name. (This way, you can make asin
appear as arcsin or even sin^(-1) if you want).

Revision 2679 - Directory Listing
Modified Tue Aug 24 03:31:47 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Fixed wrong error messages when operators are undefined in a context.

Revision 2678 - Directory Listing
Modified Mon Aug 23 23:55:37 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Modified the parser so that the classes for the various object
constructors are stored in the context table rather than hard-coded
into the parser.  That way, you can override the default classes with
your own.  This gives you even more complete control to modify the
parser.  (You had been able to replace the definitions of operators,
functions and list-like objects, but could not override the behaviour
of numbers, strings, variables, and so on.  Now you can.)

This effects most of the files, but only by changing the name of the
calls that create the various objects.

There are also a couple of other minor fixes.

Revision 2676 - Directory Listing
Modified Mon Aug 23 05:00:16 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Better highlighting for syntax error involving implied
multiplication.  (No highlighted had been done in the past.)

Revision 2675 - Directory Listing
Modified Mon Aug 23 04:59:05 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Get the type right when evaluating an AbsoluteValue and obtaining a
Value object.

Revision 2674 - Directory Listing
Modified Mon Aug 23 04:58:00 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Remove more lines in error messages produced while evaluation student
answers.

Revision 2673 - Directory Listing
Modified Mon Aug 23 01:21:27 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Moved WW-specific routines from Parser.pm to WeBWorK.pm.
Changed error reporting when the error message was not generated by
the parser directly.  (The stack trace and line number references are
removed before the error is reported.)

Revision 2672 - Directory Listing
Modified Sun Aug 22 22:46:14 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Added easy calls to disable/enable collections of functions or
individual functions in the current context.  So you can say

	   Parser::Context::Functions::Disable('Trig');

to disallow the use of trig functions, or

	   Parser::Context::Functions::Disable('Trig','Numeric');
	   Parser::Context::Functions::Enable('sqrt');

to disable trig and numeric functions (like log, exp, abs, etc) but
allow sqrt.

Note that disabling sqrt() does not disable x^(1/2) (this must be done
through disabling the ^ and ** operators), and disabling abs() does
not disable |x| (which must be done by removing the '|' definition
from the Context's parens list).

Revision 2671 - Directory Listing
Modified Sun Aug 22 21:18:06 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Fixed some inconsistencies between handing of matrices within the
parser and Value packages.  Added a predefined Matrix context.

Revision 2670 - Directory Listing
Modified Sun Aug 22 16:06:28 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Had the default granularity the wrong direction.

Revision 2669 - Directory Listing
Modified Sun Aug 22 15:42:50 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Made the granularity of the test-point intervals be a parameter that
can be set on a global or variable-by-variable basis, so this is now
controlable from the .pg file.  For example:

            Context("Numeric")->variables->are(
              k=>{limits=>[1,10], resolution=>1},
              x=>{limits=>[-2,2], granularity=>1000},
            );

will make k be a variable that will only take on integer values
between 1 and 10, and x a variable that will take on one of 1000
different values evenly spaced between -2 and 2 (so resolution is
4/1000 in this case).

These parameters can also be set for an individual formula:

           $f = Formula("k^2-1");
           $f->{resolution} = 1;
           $f->{limits} = [0,10];

Revision 2668 - Directory Listing
Modified Sun Aug 22 02:55:38 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Fixed TeX output of Matrices to use \array rather than \matrix for
matrices with formulas as entries (this had already been fixed for
constant matrices).  Made intervals produce formulas when of of the
endpoints is a formula.  Removed unneeded comment.

Revision 2667 - Directory Listing
Modified Sun Aug 22 02:51:53 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Added support for dimension warnings in the answer checker for
formulas that return points, vectors or matrices.

Revision 2666 - Directory Listing
Modified Sun Aug 22 00:56:32 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Formulas can now be compared even if their variables are complex
numbers, or even points or vectors!  This makes it possible to ask
students for complex functions like z^2+i and so on.

You can specify limits for variables either via
Context()->variables->set(x=>{limits=>[0,1]})  (for reals) or
Context()->variables->set(z=>{limits=>[[-2,2],[0,1]]}) (for complexes).
Similarly for points and vectors (where the number of sub arrays
depends on the dimension).  You can also give the limits for a
specific formula by assigning to its ->{limits} field:

    $f = Formula("sqrt(x-10)");
    $f->{limits} = [10,12];

There are now named variable types for 'Point2D', 'Point3D',
'Vector2D' and 'Vector3D', in addition to 'Real' and 'Complex'.
You can also specify a variable type by giving an explicit instance of
a value of the given type.  E.g.

    Context()->variables->add(x=>'Real',y=>0);     # two real variables
    Context()->variables->add(z=>'Complex',w=>i);  # two complexes
    Context()->variables->add(r=>Vector(0,0,0));   # a vector in R^3
    Context()->variables->add(X=>'Vector3D');      # a vector in R^3

There still needs to be more error checking in processing
user-supplied limits, but I'm not sure how much overhead is worth it.

Revision 2665 - Directory Listing
Modified Sun Aug 22 00:41:44 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Made the default context be Numeric context rather than Full context.
Since there is only one variable in this context, it will speed up
function answer checking.  It will also encourage you to choose the
correct context explicitly.

Also changed Complex context to have z as the only variable.  If you
want x and y as reals, you need to add them in by hand.  Again, this
is for efficiency in answer checking.

Revision 2664 - Directory Listing
Modified Sat Aug 21 22:02:14 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Added a file to perform WeBWorK-specific modifications to the
Parser/Value packages.  (I've tried to make these independent of
WeBWorK, so you can use them in other perl code if you want to.)

The parameters for fuzzy reals and some of the other parameters now
are taken from the pg->{ansEvalDefaults} values (as defined in
global.conf or course.conf).  More still needs to be done with this,
however.

Revision 2661 - Directory Listing
Modified Fri Aug 20 15:56:56 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

A number of fixes to make handing lists work better.  In particular,
you can now specify checks for whether the right kinds of parentheses
(or none at all) are used on the student's answer.  Some of the flags
for the list checker have been changed to accommodate this.

Revision 2660 - Directory Listing
Modified Fri Aug 20 15:52:32 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

A number of adjustments to get negative infinities to work better.
They used to be stored as separate Parser strings, but now they are
flagged versions of a single string.

All of the problems are really due to the fact that there is no
Infinity class in the Parser (only a Value version).  That should be
changed, but will require some work, and can be put off for now.

It would be best if the classes within the two packages would match up
nearly 1-to-1, but for historical reasons, they don't.  Since the
introduction of Real, String and Infinity classes to the Value
package, The Infinity class is the one main difference between the
two, and once that is fixed, everything needs to be looked over to
check for unnecessary complications due to the historical lack of classes
in one or the other package.

Revision 2658 - Directory Listing
Modified Fri Aug 20 11:17:06 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Make blank patterns be ^$ (which should never match) rather than empty
(which always matches).  this fixes a problem where if a context has
no functions, for example, the parser would attempt to create function
calls to a function named ''.

Revision 2657 - Directory Listing
Modified Fri Aug 20 11:13:51 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Handle trapped error messages that are not produced by the parser
error reporter (i.e., by bugs within the parser itself).  Also added
an error if implied multiplication is attempted when the operator for
it is not defined in the current context.

Revision 2656 - Directory Listing
Modified Fri Aug 20 02:13:38 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

We need to protect the HTML in the professor's answer so that if it
contains <, for example, it won't disappear.

Revision 2655 - Directory Listing
Modified Fri Aug 20 02:11:50 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Fixed typo.

Revision 2654 - Directory Listing
Modified Fri Aug 20 02:11:08 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Avoid possible infinite recursion in promotePrecedence() when special
precedence is used.

Revision 2653 - Directory Listing
Modified Thu Aug 19 17:31:18 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Fixed error with handling of +infinity and -infinity.
(They had been defined as strings, but now we can let the + and -
operators handle them).

Revision 2650 - Directory Listing
Modified Thu Aug 19 14:23:00 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Added Parser::Number::NoDecimals() function that causes the parser to
give an error message when the student types a decimal number.  This
means the student must enter fractions as fractions, or values like
sqrt(2) or pi/4 symbolically not numerically.

Revision 2649 - Directory Listing
Modified Thu Aug 19 14:19:32 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Fixed an error in the generation of regexp patterns for the various
data types.

Revision 2648 - Directory Listing
Modified Thu Aug 19 12:38:47 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

The answer checkers now work with subclasses of Formulas that are not
part of the Value:: package tree itself (we call Value::isFormula()
rather than checking the class directly).

I also removed the various cmp_* flags that stored method names as
they ended up not needing to be used (they were intended as a means of
overriding the default method names, but subclassing turned out to be
a better approach).

I moved some initialization of the answer checker out of the anonymous
subroutine that is installed in the checker and just have that
subroutine call the correct answer's main checker (which I renamed).

Finally, I changed the student_ans value to be an HTMLized version of
the student answer, since the student could include things like < in
his answer (e.g., for vectors), in which case his whole answer might
disappear.  I wonder if this couldn't be handled better at a higher
level, as it seems wrong to make the student_ans be HTML rather than
the parsed string.  I originally thought Problem.pm could do the
protecting of HTML special characters, but this won't work without
additional changes, since some answer checkers put HTML into
student_ans to mark sytanx errors in the student answer, and you DON'T
want to protect those HTML characters.  The student_ans field is
probably being misused in this, and there might want to be another
field that gets used by Problem.pm in place of student_ans (which can
be HTML protected) when it is non-empty; say student_HTML or something
like that.  The answer checkers could use that field if it wants to
add HTML to the student answer, and student_ans otherwise, with the
assurance that it's HTML characters will be protected.  That way, if a
second answer checker calls the first (like some list checkers do),
then the second checker doesn't have to worry about removing HTML from
the student ans, and doesn't ahve to wonder whether the student_ans
actually contains an error message or syntax markings rather than the
actual student answer.

Revision 2647 - Directory Listing
Modified Thu Aug 19 12:18:56 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Context() now accepts a reference to an actual Context object rather
than a name of a predefined context, and will switch to that.

Revision 2646 - Directory Listing
Modified Thu Aug 19 12:16:41 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Make it possible to create subclasses of objects in the value package
that are not actually in the Value:: package tree.  This makes it
possible to have .pl files (that are run via loadMacros) that create
new Value object classes that are local to the problem rather than
global to the system.  (With mod_perl, if a .pl file added to the
Value:: tree itself, the results would be persistent, and this could
adversely affect future problems processed by the same httpd child
process.  It could lead to "redefined subroutine" errors, or worse.)
This provides a safe way to extend the parser on a problem-specific
basis.

This technique is used in the line and plane answer checkers (coming
soon), for example.  If such a checker becomes widely used, it can
always be added into the Value:: tree at a later time.

Revision 2645 - Directory Listing
Modified Thu Aug 19 12:02:15 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Make sure equality always returns a defined value, and
put spaces around the equal sign in string output.

Revision 2644 - Directory Listing
Modified Thu Aug 19 12:01:12 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Make sure loadMacros() doesn't try to load these files more than once.

Revision 2643 - Directory Listing
Modified Thu Aug 19 11:55:56 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Use the standard precedences rather than the experimental ones by
default.  The professor will need to specificaly request the
non-standard ones, for now.

Revision 2634 - Directory Listing
Modified Tue Aug 17 15:21:58 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Changed the string used for the student answer to be taken from the
unevaluated formula rather than the fully-evaluated one.  This leaves
constants unreplaced, for one thing.

Currently the parser combines constants automatically during the parse
[which should be controllable by a flag], so student answers that
produce numbers are fully evaluated at this point already, except for
constant substitution.  This could be changed so that even for
numberic results, the student sees the parsed expression (rather than
the numeric result), which might help them identify where they and the
parser differ in their interpretation.  It is still nice to see the
final computed result, however, but there is no place to show the
parsed input as well as the final result.  One solution would be to
add another column (wasting space).  Another would be to make the
value shown be "parsed-value = computed-value" when they are not the
same thing.  A bit ugly, but works within the current framework.

Revision 2632 - Directory Listing
Modified Tue Aug 17 12:05:18 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Fixed typo in name of random generator.

Revision 2629 - Directory Listing
Modified Tue Aug 17 02:01:27 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Fixed a number of minor problems with creating perl functions from
formulas (this is done automatically as part of the function answer
checker, so is showing up now that I have that checker in place).

Also improved error messages in the function answer checker, and fixed
a bug when students enter a constant list or union when the answer
checker expects formulas.

Revision 2628 - Directory Listing
Modified Mon Aug 16 21:41:05 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Allow parser "constants" to be (in reality) formulas.  That way, for
example, you can defined T, N and B to be the formulas for the unit
tangent, normal and binormal of a space curve (as functions of "t")
and the student can write anwers in terms of T, N and B (without
having to compute them).

You could have created FUNCTIONS T(t), N(t) and B(t), and added them
to the parser to get almost the same effect, but the students would
have had to include the "(t)".  (If you want that, go ahead and do it
that way.)

Revision 2627 - Directory Listing
Modified Mon Aug 16 20:22:16 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Removed unwanted side-effects of some type-match checks, and moved the
ignoreStrings flag so that it is available for the checkers of ANY type.

Revision 2626 - Directory Listing
Modified Mon Aug 16 19:44:26 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

One more fix for handling intervals properly (I think it's really
right this time).  Also, named constants that end in numbers will
produce TeX output with the number as a subscript (this was already
true for variable names).

Revision 2625 - Directory Listing
Modified Mon Aug 16 18:35:12 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Added string comparison to all Value object classes (to compare the
string value of an object to another string).

Overloaded perl '.' operator to do dot product when the operands are
formulas returning vectors.  (Part of the auto-generation of
formulas).

A few improvements to real and complex class output results.

Made Union class slightly more robust and removed need for makeUnion
method other than in the Union itself.

Revision 2624 - Directory Listing
Modified Mon Aug 16 13:44:45 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Added support for unorderd list or formulas with partial credit.
Fixed type mismatch reporting in formula answer checker.
Fixed an error with Unions producing incorrect perl versions under
some circumstances.

Revision 2622 - Directory Listing
Modified Sun Aug 15 22:46:57 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Created the first draft of the Parser's function answer checker.  Some
work still needs to be done, in particular, type mismatches are not
being reported, and lists are being processed only as ordered lists
with no partial credit.

This doesn't implement everything from fun_cmp.  In particular, there
is no support for parameter matching at the moment.  This will have to
be added, but I'm not quite sure how to do it when the function's
return value is not a real number (e.g., an interval).

On the other hand, this checker is more forgiving about domain errors:
if tries a point where the professor's function is not defined, it
ignores that one and looks for another (until it decides it can't find
one).  Once it has these points, it tries them on the student's
answer, and if the student's function is undefined, then the student
answer is wrong (since it is not defined somewhere that the
professor's funciton is).  This avoids the "Error evaluating student
function at ..." messages, which just confused most students anyway.

Revision 2621 - Directory Listing
Modified Sun Aug 15 17:05:41 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Improved error messages, particularly when the student enters a
formula in an answer that should be constant, and also for incorrect
answers in lists of answers.  There are a few other miscellaneous output
improvements as well.

Revision 2620 - Directory Listing
Modified Sun Aug 15 12:02:05 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Had to put back the global context variable after all.  :-(
It gets reset in Parser.pl, so it should be OK even with mod_perl.

Revision 2619 - Directory Listing
Modified Sun Aug 15 00:45:46 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Modified Context() function so that it no longer uses a global package
variable for storing the user's context table.

Revision 2617 - Directory Listing
Modified Sun Aug 15 00:13:38 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

The Union answer checker now uses the generic List checker, so that it
will be able to produce partial credit and hints about which Intervals
are correct.

Revision 2616 - Directory Listing
Modified Sat Aug 14 21:29:21 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Added an equality operator (not active initially) that can be used for
things like equations of planes and so on.  I'm working on the answer
checker for that.

Revision 2615 - Directory Listing
Modified Sat Aug 14 21:27:45 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

*** empty log message ***

Revision 2612 - Directory Listing
Modified Sat Aug 14 19:29:42 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Fixed some bugs in the handle of the context in ->string and ->TeX
methods of Value objects.

Revision 2611 - Directory Listing
Modified Sat Aug 14 15:59:35 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Fixed a typo in one of the parser answer checkers.  Added a line that
was incorrecctly removed in the parser.

Revision 2610 - Directory Listing
Modified Sat Aug 14 13:55:54 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

The class file for the Value::String object.  (Forgot to add it before
the last commit.  Sorry!)

Revision 2609 - Directory Listing
Modified Sat Aug 14 13:54:52 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Added a String type to the Value package.  Mostly this is to make it
possible to generate an answer checker for it that uses the parser.
It also makes it more consistent for handling things like stringify,
especially when they are recursively called internally.

Added new default strings "NONE" and "DNE", since these get used a
lot.

Modified how the default parameters are set up for the answer
checkers, and how the answer checker reports the expected answer type
in type mismatch error messages.

Revision 2608 - Directory Listing
Modified Sat Aug 14 13:49:56 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Added Infinity function (similar to i and pi) for creating infinity
constants.

Revision 2607 - Directory Listing
Modified Sat Aug 14 11:26:49 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Allow unary + and - to work on infinities.

Revision 2606 - Directory Listing
Modified Sat Aug 14 11:25:47 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Can now specify that the objects stringify themselfs in their TeX
forms rather than their answer-string forms.  This makes it easier to
use the objects in the text of a problem (without having to call ->TeX
explicitly each reference).

Use

       Context()->texStrings

to start outputting TeX strings, and

      Context()->normalStrings

to switch back.

Revision 2605 - Directory Listing
Modified Sat Aug 14 02:50:18 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Incorporated infinities into Parser package better.  They have been
stored as String objects (with extra data) in the parser, and I've
left it that way, but now they convert to/from Vallue::Infinity
objects correctly, and these are used for generating the output.

Also added the Infinity answer checker, and adjusted the error
messages produces by type mismatches in the answer checkers and
elsewhere.

Revision 2604 - Directory Listing
Modified Fri Aug 13 23:49:16 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Fixed some output issues with intervals and unions.

Revision 2603 - Directory Listing
Modified Fri Aug 13 23:01:07 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Added an Infinite object class for the Value package.  Still need to
add it to the Parser package.

Revision 2602 - Directory Listing
Modified Fri Aug 13 22:57:27 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Changed the way the parser checks to see if it is loaded.

Revision 2601 - Directory Listing
Modified Fri Aug 13 19:06:09 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Added ability to report incorrect coordinates in point and vector
answers, and incorrect endpoints and endpoint types in intervals.
Separated these kinds of checks from the typeMatch check, where they
didn't really belong.

Added ability to specify intervals and unions as strings in Interval()
and Union(), which makes it easier to make constants of these types.

There are still problems comparing intervals that contain infinities;
I really need to make the infinity object to solve this, so have put
off trying to fix that for now.

Revision 2600 - Directory Listing
Modified Fri Aug 13 14:39:16 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Handle list entries that are not Value objects better.

Revision 2599 - Directory Listing
Modified Fri Aug 13 14:19:23 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

The List object's answer checker is now considerably improved.  It
will allow you to specify an unorderd or ordered check, and whether to
print various kinds of hints for wrong answers.

The checker can return partial credit, but WW doesn't deal well with
this at the moment (some small changes to Problem.pm can take care of
that).  Partial credit should be based on $showPartialCorrectAnswers,
but it is disabled for now.

The list answer checker probably still needs some work, especially
with non-numeric lists.

Revision 2597 - Directory Listing
Modified Fri Aug 13 11:38:22 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Added answer checker for parallel vectors.
Added option to number checker to have it not report type mismatches
for the known strings (like 'infinity').  (Really need a class for
infinities, and a Value.pm class for strings.)

Revision 2596 - Directory Listing
Modified Thu Aug 12 23:11:32 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Have parser handle infinities better.

Revision 2594 - Directory Listing
Modified Thu Aug 12 20:17:18 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Fixes for handling intervals better.  In particular, deal better with
ambiguous situations, like (1,2) that could be a point.

You can use [a,a] to specify the single point a.  I'd like to make {a}
represent this (and maybe even {a,b,c} to form finite sets), but this
would interfere with the use of { and } as alternative parentheses.
(Does anyone really use these?)

Do we need a cross product for intervals (and sets) as a means of
representing regions in R^2 (or higher)?

Revision 2593 - Directory Listing
Modified Thu Aug 12 16:48:52 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

This is a preliminary attempt at adding answer checkers that use the
parser.  If you have a parser object (like a formula or a vector), you
can use the ->cmp method to get an answer checker appropriate for the
object.  For example:

	 Context('Vector');
	 $v = Vector(1,2,3);
	 #  print text of problem
	 ANS($v->cmp);

would produce an answer checker that matched against the vector <1,2,3>.
Most of the parameters are set in the Context, but additional ones can
be passed to the checker (this still needs work).

See the sample problems for more examples.

The checkers for Reals, Complexes, Points, Vectors, Matrices and
Intervals work pretty well.  The ones for List and Union objects need
more work, as they only do an ORDERED check at the moment (the student
answers must be in the same order).  This needs to be fixed.
The checker for Formula objects (which corresponds to fun_cmp) still
needs to be written.

Revision 2592 - Directory Listing
Modified Thu Aug 12 16:40:47 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

A number of small fixes.  Most were to fix minor bugs in string and
TeX output, particulary for the various list-based objects (like
vectors, intervals, etc.).  There were also some bug fixes in the
comparison routines.  Some additional checks were added for valid
intervals when the coordinates are formulas.

Revision 2590 - Directory Listing
Modified Wed Aug 11 18:02:44 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Added Real() command to create fuzzy reals.

Revision 2583 - Directory Listing
Modified Tue Aug 10 11:22:19 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Fixed generation of LaTeX version of sqrt(...).

Revision 2580 - Directory Listing
Modified Mon Aug 9 21:38:58 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Forgot to add this file.  It implements the "fuzzy real" class.

Revision 2579 - Directory Listing
Modified Mon Aug 9 21:38:01 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Significant update to new parser.

New features include:

  Better control over format of vector output (you can now
    specify ijk-format rather than <...> format)

  "Fuzzy" reals, where the relations like == return true when the
    two values are "close enough".  (This is controlable using
    parameters similar to those used in NUM_CMP).

  The fuzzy reals are now used in vectors/points/matrices/complexes/intervals
    and so on so that their relations will also be fuzzy.  E.g.,
    (1E-13,2) == (0,3) will be true, and norm(Vector(0,1E-13)) will
    equal 0.

  The two main portions of the parser (the Parser and Value packages)
    now share a common context object for configuration purposes.

Revision 2576 - Directory Listing
Modified Wed Aug 4 20:52:28 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Make Parser work with PGauxiliaryFunctions.pl, and add the macro files
needed to initialize the parser.

Revision 2574 - Directory Listing
Modified Wed Aug 4 20:23:11 2004 UTC (8 years, 9 months ago) by dpvc
Original Path: trunk/pg

Make Parser live nicely with Complex1.pm.

In particular, make the i() function determine whether it should
call the Complex::i() function or the Parser version.

Revision 2558 - Directory Listing
Modified Wed Jul 28 20:32:33 2004 UTC (8 years, 9 months ago) by sh002i
Original Path: trunk/pg

merged changes from rel-2-1-a1 -- stop using that branch.

Revision 2518 - Directory Listing
Modified Fri Jul 16 01:32:52 2004 UTC (8 years, 10 months ago) by gage
Original Path: trunk/pg

Will create the tempDirectory if it is missing.

this is useful if, for example, you switch the tmp directory from
webwork2/courses/courseName/html/tmp  to something like

/ww/htdocs/tmp/courseName

You don't want to create a courseName node for every course, you would
prefer to create only /ww/htdocs/tmp

the current version will create the node courseName if it doesn't exist
(or the name tmp in the first example) but will not create files
higher up the tree.

Revision 2488 - Directory Listing
Modified Sun Jul 11 21:36:26 2004 UTC (8 years, 10 months ago) by gage
Original Path: trunk/pg

Added better error messages.  Removed and extraneous slash.

Revision 2469 - Directory Listing
Modified Thu Jul 8 15:29:45 2004 UTC (8 years, 10 months ago) by apizer
Original Path: trunk/pg

Create equations directory if it doesn't exist.  All directories under
tmp should be recreated if they don't exist.

Arnie

Revision 2461 - Directory Listing
Modified Wed Jul 7 21:26:52 2004 UTC (8 years, 10 months ago) by apizer
Original Path: trunk/pg

Change permission of tmp files so that they can be removed.

Arnie

Revision 2445 - Directory Listing
Modified Tue Jul 6 21:21:20 2004 UTC (8 years, 10 months ago) by jj
Original Path: trunk/pg

Allow psvn to equal 0.  It could happen in situations where a problem
isn't really assigned to the person.

Revision 2443 - Directory Listing
Modified Tue Jul 6 15:16:51 2004 UTC (8 years, 10 months ago) by jj
Original Path: trunk/pg

Allow new option for image.  extra_html_tags are added to the img tag of the
image.  Allows you to control the vertical alignment of an image.

Revision 2420 - Directory Listing
Modified Sat Jun 26 21:56:44 2004 UTC (8 years, 10 months ago) by jj
Original Path: trunk/pg

Most of the work for adjusting vertical alignment of images is here.

Revision 2409 - Directory Listing
Modified Fri Jun 25 16:27:55 2004 UTC (8 years, 10 months ago) by jj
Original Path: trunk/pg

Allow option of not using the cache.  If its path is the empty string, then
we just return the md5 hash of the latex string followed by a 1.

Revision 2400 - Directory Listing
Modified Fri Jun 25 12:32:14 2004 UTC (8 years, 10 months ago) by dpvc
Original Path: trunk/pg

Fixed error in ANS_NUM_TO_NAME.

Revision 2396 - Directory Listing
Modified Thu Jun 24 22:07:22 2004 UTC (8 years, 10 months ago) by dpvc
Original Path: trunk/pg

Moved the <BR> in std_print_q from the beginning of a line to the end
of a line.  This prevents unexpected initial blank lines.

Revision 2393 - Directory Listing
Modified Thu Jun 24 21:01:23 2004 UTC (8 years, 11 months ago) by dpvc
Original Path: trunk/pg

Removed the experimental Parser-based implementations of i(), j() and k().
(sorry about that).

Revision 2392 - Directory Listing
Modified Thu Jun 24 21:00:26 2004 UTC (8 years, 11 months ago) by dpvc
Original Path: trunk/pg

Removed skip and rule from problem header generated in TeX mode here,
and let the snippets handle it (they were producing redundent rules).

Also removed some unwanted spaces in htmllink().

(Accidentally committed experimental change to dangerousMacros.pl, and
don't know how to prevent it at this point, so I'll commit a change
back to the original in a moment.)

Revision 2389 - Directory Listing
Modified Thu Jun 24 18:13:33 2004 UTC (8 years, 11 months ago) by dpvc
Original Path: trunk/pg

Removed extra spaces from around dvipng images.

(These can cause bad line breaks, e.g. between mathematics and the
punctuation that follows.)

Revision 2370 - Directory Listing
Modified Wed Jun 23 01:19:15 2004 UTC (8 years, 11 months ago) by sh002i
Original Path: trunk/pg

moved DISPLAY_MODE_FAILOVER into this file

Revision 2369 - Directory Listing
Modified Wed Jun 23 01:18:58 2004 UTC (8 years, 11 months ago) by sh002i
Original Path: trunk/pg

ImageGenerator is now using WeBWorK::Constants

Revision 2363 - Directory Listing
Modified Tue Jun 22 18:03:07 2004 UTC (8 years, 11 months ago) by jj
Original Path: trunk/pg

When using the imageCache (which is always), put images into subdirectories
based on the first two characters of their md5 hash.

Revision 2345 - Directory Listing
Modified Thu Jun 17 20:02:12 2004 UTC (8 years, 11 months ago) by apizer
Original Path: trunk/pg

Changed pacckage name from strict to ww_strict per Sam's suggestion
to prevent redefining warnings.

Arnie

Revision 2292 - Directory Listing
Modified Fri Jun 11 16:40:44 2004 UTC (8 years, 11 months ago) by dpvc
Original Path: trunk/pg

Fixed a bug in jsMath mode where it would not display < (when it looked like
part of a tag).

Also, removed unwanted spaced around input box.

Revision 2277 - Directory Listing
Modified Tue Jun 8 02:06:32 2004 UTC (8 years, 11 months ago) by sh002i
Original Path: trunk/pg

Reformatted the FUNCTION_CMP subroutine to make it more readable. Also,
one functional change:

< (defined ($inputs_ref->{$prev_ans_label} and $inputs_ref->{$prev_ans_label} =~/\S/) )
> (defined $inputs_ref->{$prev_ans_label} and $inputs_ref->{$prev_ans_label} =~/\S/)

I think the latter was what was intended.

Revision 2274 - Directory Listing
Modified Mon Jun 7 23:53:45 2004 UTC (8 years, 11 months ago) by sh002i
Original Path: trunk/pg

got rid of remaining calls to "wwerror". Fixes bug #530.

Revision 2270 - Directory Listing
Modified Mon Jun 7 11:52:47 2004 UTC (8 years, 11 months ago) by dpvc
Original Path: trunk/pg

Removed redundant HTML_jsMath check.

Revision 2267 - Directory Listing
Modified Mon Jun 7 01:34:34 2004 UTC (8 years, 11 months ago) by dpvc
Original Path: trunk/pg

Added jsMath support to these files.

Basically, HTML_jsMath should do whatever HTML_dpng mode does.  I simply included
it HTML_jsMath every time HTML_dpng appeared.

Revision 2253 - Directory Listing
Modified Sat Jun 5 16:13:33 2004 UTC (8 years, 11 months ago) by jj
Original Path: trunk/pg

Allow on-the-fly graphics in jsmath and asciimath modes.

Revision 2243 - Directory Listing
Modified Wed Jun 2 20:18:48 2004 UTC (8 years, 11 months ago) by jj
Original Path: trunk/pg

Fixed bug which caused some debug output to always appear.

Revision 2232 - Directory Listing
Modified Mon May 31 15:44:43 2004 UTC (8 years, 11 months ago) by jj
Original Path: trunk/pg

Re-use on-the-fly graphs, unless problem seed has change, source file has changed, or the problem is being rendered without being part of a real set.

Revision 2215 - Directory Listing
Modified Mon May 24 21:24:41 2004 UTC (9 years ago) by jj
Original Path: trunk/pg

Allow default size of on the fly graphics to be set in global.conf, and make pop-ups of those graphs have windows closer to the size of the graph.  Also, pop-ups always make a new window - important for problems which make you compare two or more popped up graphs.

Revision 2206 - Directory Listing
Modified Mon May 24 17:51:44 2004 UTC (9 years ago) by jj
Original Path: trunk/pg

Made on the fly graph names use problem seed rather than psvn.  It is a better identifier for pages like SetMaker.  Also made image names workable for set names containing periods (for the day when set names are free to contain periods).

Revision 2201 - Directory Listing
Modified Mon May 24 02:32:45 2004 UTC (9 years ago) by dpvc
Original Path: trunk/pg

update to asciimath for MSIE.

Revision 2199 - Directory Listing
Modified Mon May 24 01:59:53 2004 UTC (9 years ago) by dpvc
Original Path: trunk/pg

Support for asciimath.

Added preliminary support for asciimath rendering.  You must use a
MathML-enabled browser.

Revision 2193 - Directory Listing
Modified Mon May 24 01:05:03 2004 UTC (9 years ago) by sh002i
Original Path: trunk/pg

failover data now passed in via %envir.

Revision 2173 - Directory Listing
Modified Sun May 23 01:33:22 2004 UTC (9 years ago) by jj
Original Path: trunk/pg

Added helpLink for standard help pages in pg files.

Revision 2167 - Directory Listing
Modified Sat May 22 22:32:43 2004 UTC (9 years ago) by gage
Original Path: trunk/pg

Moved be_strict after package main;

Revision 2166 - Directory Listing
Modified Sat May 22 22:16:20 2004 UTC (9 years ago) by dpvc
Original Path: trunk/pg

Files needed for jsMath display mode.

Revision 2164 - Directory Listing
Modified Sat May 22 22:10:30 2004 UTC (9 years ago) by gage
Original Path: trunk/pg

Moving ww_strict.pm forward to 5.8.3 compatible version
with require Carp; commented out

Revision 2163 - Directory Listing
Modified Sat May 22 21:34:58 2004 UTC (9 years ago) by gage
Original Path: trunk/pg

Moved ww_strict.pm back to be identical with strict.pm from perl 5.6

Revision 2158 - Directory Listing
Modified Sat May 22 20:48:51 2004 UTC (9 years ago) by gage
Original Path: trunk/pg

We are now using ww_strict.pm instead of strict.pm in be_strict;

Revision 2157 - Directory Listing
Modified Sat May 22 20:46:20 2004 UTC (9 years ago) by gage
Original Path: trunk/pg

We are using our own version of strict.pm that has a require Carp;  commented out.
This is included in be_strict which is used to implement strict within PG macro files
which need to be evaluted inside the Safe compartment

Revision 2155 - Directory Listing
Modified Sat May 22 18:04:23 2004 UTC (9 years ago) by jj
Original Path: trunk/pg

Moved nicestring to PGbasicmacros.

Revision 2153 - Directory Listing
Modified Sat May 22 15:53:00 2004 UTC (9 years ago) by gage
Original Path: trunk/pg

Removed warning messages.  The macroDirectory and courseScripts directory are now defined from the %envir
variable which is shared directly with the new Safe compartment rather than via calls to $main::macroDirectory
which seemed to be unstable in some instances.  I've left the FIXME sign in place just in case there
are still problems.

Revision 2151 - Directory Listing
Modified Sat May 22 01:23:17 2004 UTC (9 years ago) by gage
Original Path: trunk/pg

Roll back the previous changes.  They were added to HEAD instead of to the experimental branch.

Revision 2150 - Directory Listing
Modified Sat May 22 01:19:11 2004 UTC (9 years ago) by gage
Original Path: trunk/pg

Experimental refactorization of answer evaluators will take place on this branch.

Revision 2144 - Directory Listing
Modified Fri May 21 23:58:13 2004 UTC (9 years ago) by apizer
Original Path: trunk/pg

Removed old commented out code dealing with PGsort.

Arnie

Revision 2143 - Directory Listing
Modified Fri May 21 23:56:48 2004 UTC (9 years ago) by apizer
Original Path: trunk/pg

Use the new PGsort which uses a true/false compare (e.g. < or lt )
rather than a -1,0,1 compare (e.g. <=> or cmp ).

Arnie

Revision 2142 - Directory Listing
Modified Fri May 21 23:54:00 2004 UTC (9 years ago) by apizer
Original Path: trunk/pg

Replaced PGsort with a version that uses quick sort.  This fixes the
problem the old PGsort had with Perl compiled with ithreads.

Arnie

Revision 2135 - Directory Listing
Modified Fri May 21 01:34:28 2004 UTC (9 years ago) by sh002i
Original Path: trunk/pg

Modified DVIPNG_ARGS to work with dvipng >= 1.0.

Revision 2061 - Directory Listing
Modified Sun May 9 17:45:41 2004 UTC (9 years ago) by gage
Original Path: trunk/pg

Modifications to PGbasicmacros and PGanswermacros which check whether a function answer
is the same as the function answer submitted previously.  Gives warning message
if the same incorrect answers is submitted twice in a row.  The functions must
both compile in order to recognize that they are the same answer.  Two syntactically
incorrect entries will not be recognized as equivalent, even if they are in some sense.

Revision 2060 - Directory Listing
Modified Sun May 9 17:43:32 2004 UTC (9 years ago) by gage
Original Path: trunk/pg

Cosmetic fixes to code layout.

Revision 2057 - Directory Listing
Modified Sat May 8 22:53:03 2004 UTC (9 years ago) by gage
Original Path: trunk/pg

Preliminary changes that may eventually allow us to solve the be_strict problem for 5.8.0

Revision 2056 - Directory Listing
Modified Sat May 8 22:51:38 2004 UTC (9 years ago) by gage
Original Path: trunk/pg

Updating answer evaluators in PGanswermacros.pl

Beginning to include code that will allow us to
check whether the current answer is the same
as the one submitted previously.

Revision 1964 - Directory Listing
Modified Thu Apr 22 14:39:28 2004 UTC (9 years, 1 month ago) by jj
Original Path: trunk/pg

Added convention to beginproblem that point value of "" means that we don't
print the point value at all.  It will also supress printing of the filename
if someone is supposed to have filenames printed, which is appropriate for
the one known time this convention is used.

Revision 1943 - Directory Listing
Modified Sun Apr 4 20:05:34 2004 UTC (9 years, 1 month ago) by jj
Original Path: trunk/pg

Synched with ASU version.  Defunct functions deleted, new functions added,
and documentation added.

Revision 1941 - Directory Listing
Modified Sun Apr 4 15:56:59 2004 UTC (9 years, 1 month ago) by jj
Original Path: trunk/pg

WW 2 didn't like the top line.  Inserting a comment seems to fix it.  Also
corrected a typo.

Revision 1932 - Directory Listing
Modified Sat Apr 3 15:44:55 2004 UTC (9 years, 1 month ago) by jj
Original Path: trunk/pg

Added support for useBaseTenLog for ww2.

Revision 1896 - Directory Listing
Modified Wed Mar 17 00:45:28 2004 UTC (9 years, 2 months ago) by gage
Original Path: trunk/pg

Changed the naming of arrays from ArRaY[0,0,0] to ArRaY__0:0:0:__

This involved changes in PG.pl and PGmorematrixmacros (ans_array_filter)

Made other cosmetic fixes to code.  Added names to many filters to help with
debugging.  It seems to work for now.

Revision 1834 - Directory Listing
Modified Thu Mar 4 17:41:06 2004 UTC (9 years, 2 months ago) by gage
Original Path: trunk/pg

Added comments

Revision 1831 - Directory Listing
Modified Thu Mar 4 13:06:32 2004 UTC (9 years, 2 months ago) by gage
Original Path: trunk/pg

Changed documentation spacing

Revision 1812 - Directory Listing
Modified Mon Feb 16 20:34:01 2004 UTC (9 years, 3 months ago) by gage
Original Path: trunk/pg

This is a new attempt to fix the problem that there was no
preview string if the units were incorrect.  The previous fix
caused difficulties if strings were entered for numerical answers.

The new code has been added to the subroutine fix_answers_for_display
which already performed answer cleanup of various kinds.

Revision 1797 - Directory Listing
Modified Thu Feb 12 20:26:26 2004 UTC (9 years, 3 months ago) by toenail
Original Path: trunk/pg

Reordered pre-filters in NUM_CMP to allow for latex previews of answers with no units

Revision 1791 - Directory Listing
Modified Thu Feb 12 14:23:36 2004 UTC (9 years, 3 months ago) by gage
Original Path: trunk/pg

Added RECORD_FORM_DATA for making sticky form data which
is not specifically related to answers.

Revision 1785 - Directory Listing
Modified Mon Feb 9 17:18:39 2004 UTC (9 years, 3 months ago) by gage
Original Path: trunk/pg

Modifications to checkbox_cmp to include preview_latex_string.

this completes the squashing of bug #400

Revision 1784 - Directory Listing
Modified Mon Feb 9 17:09:06 2004 UTC (9 years, 3 months ago) by gage
Original Path: trunk/pg

Made changes to the check box macros so that they will remain
sticky when more than one check box is checked.
Involves splitting a null separated string ( or perhaps converting
a reference to an array).  uses a new subroutine contained_in(elem,
array_or_arrray_ref_or_null_separated_string)

this resolves part of bug #400

--Mike

Revision 1780 - Directory Listing
Modified Fri Feb 6 02:55:55 2004 UTC (9 years, 3 months ago) by gage
Original Path: trunk/pg

Corrected format of one line.

--Mike

Revision 1779 - Directory Listing
Modified Fri Feb 6 02:52:42 2004 UTC (9 years, 3 months ago) by gage
Original Path: trunk/pg

Allow a 256 error from dvipng.  This seems to be necessary on webwork.math.rochester.edu, so I'm commiting
it to the CVS as well to keep the two systems in sync.

--Mike

Revision 1765 - Directory Listing
Modified Fri Jan 30 18:04:37 2004 UTC (9 years, 3 months ago) by jj
Original Path: trunk/pg

Fix bug from last fix, and a second bug caused by $Global::htmlModeDefault
being accidentally called $Global::htmldisplayModeDefault in this file.

Revision 1764 - Directory Listing
Modified Fri Jan 30 15:28:46 2004 UTC (9 years, 3 months ago) by jj
Original Path: trunk/pg

Some sites use only one display mode.  In that case, the "choice of one"
display mode should not be displayed.

Revision 1759 - Directory Listing
Modified Mon Jan 26 16:59:30 2004 UTC (9 years, 3 months ago) by gage
Original Path: trunk/pg

Minor change to the definition of the timer

Revision 1758 - Directory Listing
Modified Mon Jan 26 16:36:29 2004 UTC (9 years, 3 months ago) by jj
Original Path: trunk/pg

If LaTeX formula ends in a backslash after removing training spaces,
then we removed too much space, so we add a space to the end of it so
it ends '\ \)'.

Revision 1710 - Directory Listing
Modified Tue Jan 6 14:04:34 2004 UTC (9 years, 4 months ago) by apizer
Original Path: trunk/pg

fixed bug in call to Romberg routine.  Romberg now requires parameters
of the form "level => 8".  This was fixed previously I thought. Not sure
how the fix was lost.

Arnie

Revision 1690 - Directory Listing
Modified Sun Dec 28 19:46:57 2003 UTC (9 years, 4 months ago) by gage
Original Path: trunk/pg

Zeroed the variable storing the responses to questionnaires.  Should
fix the error on questionnaires revealed by the persistance of mod_perl
modules.

Changed warning message in dangerousMacros.pl to more accurately describe
what is wrong when the gif2eps script cannot be executed.  (Based on actual
experience running a course on webwork.math.rochester.edu -- I couldn't remember
what my own warning message implied.)
--Mike

Revision 1688 - Directory Listing
Modified Sat Dec 27 21:34:04 2003 UTC (9 years, 4 months ago) by gage
Original Path: trunk/pg

Added error messages that should make it easier to tell if
certain directories have not been created. Also checks that
files are actually created and written at each step of the process.
--Mike

Revision 1620 - Directory Listing
Modified Fri Nov 7 14:55:12 2003 UTC (9 years, 6 months ago) by apizer
Original Path: trunk/pg

fixed a bug in line 2469 replacing \npsvnNumber by \n$psvnNumber

Arnie

Revision 1556 - Directory Listing
Modified Wed Oct 1 02:40:09 2003 UTC (9 years, 7 months ago) by sh002i
Original Path: trunk/pg

changed the way the IO modules work: shared subroutines are in IO now,
and IO has a hash %WeBWorK::PG::IO::SHARE which can be added to
Translator's %shared_subroutine_hash directly.

Revision 1555 - Directory Listing
Modified Wed Oct 1 02:31:54 2003 UTC (9 years, 7 months ago) by sh002i
Original Path: trunk/pg

changed documentation to reflect the fact that reh refresh and mtime
flags are no longer used

Revision 1553 - Directory Listing
Modified Tue Sep 30 01:20:55 2003 UTC (9 years, 7 months ago) by sh002i
Original Path: trunk/pg

added files from WW2

Revision 1550 - Directory Listing
Modified Tue Sep 30 01:18:25 2003 UTC (9 years, 7 months ago) by sh002i
Original Path: trunk/pg

check to see if $envir->{texDisposition} is defined before trying to
access it.

Revision 1540 - Directory Listing
Modified Sat Sep 27 16:47:34 2003 UTC (9 years, 7 months ago) by gage
Original Path: trunk/pg

When displaying a raw student answer, nulls are converted to \0 so that they
can be seen.  This is probably redundant since strings with multiple values
separated by nulls are supposed to be converted to references to arrays before
they reach this point.
--Mike

Revision 1535 - Directory Listing
Modified Fri Sep 26 21:16:18 2003 UTC (9 years, 7 months ago) by gage
Original Path: trunk/pg

Added line which prints out the raw student answer when the debug
flag is on.
--Mike

Revision 1534 - Directory Listing
Modified Thu Sep 25 05:42:31 2003 UTC (9 years, 7 months ago) by sh002i
Original Path: trunk/pg

removed unneeded #! line

Revision 1528 - Directory Listing
Modified Thu Sep 25 01:29:21 2003 UTC (9 years, 8 months ago) by sh002i
Original Path: trunk/pg

fixed #! line

Revision 1525 - Directory Listing
Modified Thu Sep 25 00:29:59 2003 UTC (9 years, 8 months ago) by sh002i
Original Path: trunk/pg

removed unneeded #! lines

Revision 1524 - Directory Listing
Modified Thu Sep 25 00:28:15 2003 UTC (9 years, 8 months ago) by sh002i
Original Path: trunk/pg

added image generation modules from WW2

Revision 1506 - Directory Listing
Modified Fri Sep 19 01:30:13 2003 UTC (9 years, 8 months ago) by gage
Original Path: trunk/pg

Fixed check_string filter so that it places a
value in preivew_text_string and in preview_latex_string
in the answer hash.  For example entering DNE did not
show up in answer preview, which bothered some students.

--Mike

Revision 1505 - Directory Listing
Modified Mon Sep 15 05:47:38 2003 UTC (9 years, 8 months ago) by lr003k
Original Path: trunk/pg

It seems as though the way I tried to fix long decimals isn't working the way I wanted it too, so I've commented it out for now.

~Liam

Revision 1494 - Directory Listing
Modified Tue Sep 9 02:06:31 2003 UTC (9 years, 8 months ago) by jj
Original Path: trunk/pg

Put mbox around entries of a matrix in TeX-based modes to protect
math inside of them.

Revision 1490 - Directory Listing
Modified Sun Sep 7 17:40:54 2003 UTC (9 years, 8 months ago) by gage
Original Path: trunk/pg

Corrected a typo in EV4
--Mike

Revision 1483 - Directory Listing
Modified Fri Sep 5 13:19:45 2003 UTC (9 years, 8 months ago) by gage
Original Path: trunk/pg

Added EV4 routine supplied by Zig Fiedorowicz
--Mike

Revision 1463 - Directory Listing
Modified Fri Aug 15 16:51:09 2003 UTC (9 years, 9 months ago) by gage
Original Path: trunk/pg

Changes to mail that make it work properly with ALLOW_MAIL_TO
--Mike

Revision 1462 - Directory Listing
Modified Fri Aug 15 16:49:42 2003 UTC (9 years, 9 months ago) by gage
Original Path: trunk/pg

Made changes to rh_sticky_answers so that they
are addressed correctly.

Long term I would like to remove all
references to main:: except for those
in the init routines.  The references
can be replaced by a locally defined
pointer to the  value in the current safe
compartment.

This procedure should make it easier to
maintain the macros.  All references to
global variables will occur in the init
routine.

--Mike

Revision 1456 - Directory Listing
Modified Thu Aug 14 16:10:01 2003 UTC (9 years, 9 months ago) by gage
Original Path: trunk/pg

At least a temporary fix for mail_answers_to2

These evaluators are run in the grader and the
environment variables have disappeared??  I can't find
them at any rate.

this is at best a temporary fix until we get the global
variable situation under control when using cached code.
--Mike

Revision 1455 - Directory Listing
Modified Thu Aug 14 13:27:54 2003 UTC (9 years, 9 months ago) by gage
Original Path: trunk/pg

Made changes to anstext and a few
other answer evaluators so that they
evaluated "main::" correctly.

Still need to fix install problem
grader
--Mike

Revision 1454 - Directory Listing
Modified Tue Aug 12 16:43:36 2003 UTC (9 years, 9 months ago) by jj
Original Path: trunk/pg

Redoing fix to random so that random(2,7,3) won't produce 8.  The original
fix was lost in the merger with mod-perl version.

Revision 1453 - Directory Listing
Modified Wed Aug 6 18:59:26 2003 UTC (9 years, 9 months ago) by jj
Original Path: trunk/pg

New file with linear programming simplex method related macros.

Revision 1452 - Directory Listing
Modified Tue Aug 5 16:37:10 2003 UTC (9 years, 9 months ago) by jj
Original Path: trunk/pg

Revised documentation for test_points.

Revision 1451 - Directory Listing
Modified Tue Aug 5 16:34:38 2003 UTC (9 years, 9 months ago) by jj
Original Path: trunk/pg

Added some documentation for test_points.

Revision 1450 - Directory Listing
Modified Tue Aug 5 16:24:48 2003 UTC (9 years, 9 months ago) by jj
Original Path: trunk/pg

Added option of test_points to fun_cmp.

Revision 1390 - Directory Listing
Modified Tue Jul 15 17:55:32 2003 UTC (9 years, 10 months ago) by apizer
Original Path: trunk/pg

Back off from Cervone's new definition of BR

Arnie

Revision 1385 - Directory Listing
Modified Mon Jul 14 20:22:19 2003 UTC (9 years, 10 months ago) by apizer
Original Path: trunk/pg

Fixed a bug in Davide Cervone's changes

Arnie

Revision 1379 - Directory Listing
Modified Mon Jul 14 15:16:30 2003 UTC (9 years, 10 months ago) by apizer
Original Path: trunk/pg

Incorporated Davide Cervone's improvements and bug fixes.  This mostly
involved removing unwanted spaces, etc.

Arnie

Revision 1365 - Directory Listing
Modified Fri Jul 11 20:18:57 2003 UTC (9 years, 10 months ago) by lr003k
Original Path: trunk/pg

In order to make ans_array entries "sticky" I've had to change some stuff.
The answer labels for these entries are now put into $main::PG_FLAGS{ANSWER_ENTRY_ORDER} as an array reference in PG.pl.
In processProblem8.pl the labels are caught again in the subroutines logCourseData and encode_submitted_answers. It is important that
they're caught there rather than earlier because then the translator would think that every entry was it's own answer.
Professor Gage says that processProblem8.pl is no longer used in webwork2, and he says he'll fix this there.

Revision 1351 - Directory Listing
Modified Fri Jul 11 16:30:04 2003 UTC (9 years, 10 months ago) by apizer
Original Path: trunk/pg

incorporate some of davide Cervone'e changes

Arnie

Revision 1333 - Directory Listing
Modified Wed Jul 9 23:20:23 2003 UTC (9 years, 10 months ago) by jj
Original Path: trunk/pg

Fixed new bug introduced by, er, my previous bug fix.

Revision 1332 - Directory Listing
Modified Wed Jul 9 20:29:04 2003 UTC (9 years, 10 months ago) by lr003k
Original Path: trunk/pg

Fixed a rounding problem.

Revision 1331 - Directory Listing
Modified Wed Jul 9 20:28:40 2003 UTC (9 years, 10 months ago) by lr003k
Original Path: trunk/pg

Removed the last change, it's now handled in display_matrix.

Revision 1328 - Directory Listing
Modified Wed Jul 9 19:45:40 2003 UTC (9 years, 10 months ago) by gage
Original Path: trunk/pg

Added $ to PG_random_generator in the subroutine SRAND.  Why it worked
before as a bare word is anyone's guess. Now that $PG_random_generator
is a local variable the bareword no longer works properly.
--Mike

Revision 1327 - Directory Listing
Modified Wed Jul 9 18:06:52 2003 UTC (9 years, 10 months ago) by lr003k
Original Path: trunk/pg

Added a pretty_matrix sub routine to fix some rounding problems.

Revision 1319 - Directory Listing
Modified Mon Jul 7 02:27:15 2003 UTC (9 years, 10 months ago) by jj
Original Path: trunk/pg

Made box option functional for display_matrix.  It lets you specify an
element to be boxed.

Revision 1318 - Directory Listing
Modified Mon Jul 7 01:34:38 2003 UTC (9 years, 10 months ago) by jj
Original Path: trunk/pg

Fixed bugs in matrix display when top_labels are present.

Revision 1317 - Directory Listing
Modified Fri Jul 4 05:08:37 2003 UTC (9 years, 10 months ago) by jj
Original Path: trunk/pg

Fixed tick marks for graphs - x/y values were reversed.

Revision 1314 - Directory Listing
Modified Wed Jul 2 15:27:59 2003 UTC (9 years, 10 months ago) by apizer
Original Path: trunk/pg

Add backslash to list of characters filtered out of sticky answers

Arnie

Revision 1312 - Directory Listing
Modified Tue Jul 1 17:55:12 2003 UTC (9 years, 10 months ago) by gage
Original Path: trunk/pg

Fixed error in sourceAlias.  The variable is %main::envir not
$main::envir !!!
--Mike

Revision 1311 - Directory Listing
Modified Tue Jul 1 15:36:43 2003 UTC (9 years, 10 months ago) by gage
Original Path: trunk/pg

Changed the defintion of *i to be inside the Complex package.
this and the change to dangerousMacros seems to have cured bug #116

In dangerousMacros, I've added sub i {Complex::i}; after sub i;

--Mike

Revision 1310 - Directory Listing
Modified Tue Jul 1 15:35:51 2003 UTC (9 years, 10 months ago) by gage
Original Path: trunk/pg

Changed the defintion of *i to be inside the Complex package.
this and the change to dangerousMacros seems to have cured bug #116
--Mike

Revision 1305 - Directory Listing
Modified Tue Jul 1 00:48:01 2003 UTC (9 years, 10 months ago) by gage
Original Path: trunk/pg

Latest attempt to get a version of dangerousMacros.pl that will
work with both 5.6.1 adn 5.6.0
--Mike

Revision 1304 - Directory Listing
Modified Mon Jun 30 23:24:29 2003 UTC (9 years, 10 months ago) by gage
Original Path: trunk/pg

removed unnecessary "no strict, use strict" pair
--Mike

Revision 1303 - Directory Listing
Modified Mon Jun 30 20:36:57 2003 UTC (9 years, 10 months ago) by apizer
Original Path: trunk/pg

added missing hyperbolic, inverse trig, and inverse hyperbolic functions
cintributed by Davide Cervone

Arnie

Revision 1298 - Directory Listing
Modified Fri Jun 27 19:53:50 2003 UTC (9 years, 10 months ago) by gage
Original Path: trunk/pg

Fixed typo in beginproblem
--Mike

Revision 1294 - Directory Listing
Modified Fri Jun 27 13:57:09 2003 UTC (9 years, 10 months ago) by lr003k
Original Path: trunk/pg

Added a vec_solution_cmp. Used for problems where the answer
needs to be v1_s*v2+t*v3 where v1,v2,and v3 are vectors. v1 has
to be a linear combination of the professors answer where the
first one has a nonzero coefficient. The others are a basis, and
are compared with compare_basis.

Revision 1290 - Directory Listing
Modified Thu Jun 26 22:43:15 2003 UTC (9 years, 10 months ago) by gage
Original Path: trunk/pg

Merge the time optimized branch and the main branch.  I forgot one subroutine
--Mike

Revision 1286 - Directory Listing
Modified Thu Jun 26 21:08:47 2003 UTC (9 years, 10 months ago) by gage
Original Path: trunk/pg

Make sure that the local my variables are updated in PGbasicmacros
as well as the variables in main::.

--Mike

Revision 1285 - Directory Listing
Modified Thu Jun 26 21:04:09 2003 UTC (9 years, 10 months ago) by gage
Original Path: trunk/pg

Adding preliminary ability to decompose non-square matrices.  Won't work
if a permutation is required (i.e. a pivot)
--Mike

Revision 1280 - Directory Listing
Modified Thu Jun 26 17:42:18 2003 UTC (9 years, 10 months ago) by malsyned
Original Path: trunk/pg

Merged the changes needed to work with the new WW2 translator
optimizations into the main pg branch.

Revision 1278 - Directory Listing
Modified Thu Jun 26 13:55:43 2003 UTC (9 years, 10 months ago) by lr003k
Original Path: trunk/pg

Matrices now displayed in previewer.

Revision 1276 - Directory Listing
Modified Wed Jun 25 16:26:42 2003 UTC (9 years, 11 months ago) by lr003k
Original Path: trunk/pg

committed the wrong thing

Revision 1274 - Directory Listing
Modified Wed Jun 25 15:43:03 2003 UTC (9 years, 11 months ago) by lr003k
Original Path: trunk/pg

fixed a bug

Revision 1267 - Directory Listing
Modified Tue Jun 24 15:25:58 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

Changes that allow these files to work with caching version
of Webwork2.0 -- optimized for speed
--Mike

Revision 1266 - Directory Listing
Modified Tue Jun 24 15:24:09 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

Changes that allow these files to work with optimized
version of WeBWorK2.0 which uses caching of macro files.
--Mike

Revision 1265 - Directory Listing
Modified Tue Jun 24 14:58:03 2003 UTC (9 years, 11 months ago) by lr003k
Original Path: trunk/pg

Made the code more object-oriented

Revision 1253 - Directory Listing
Modified Mon Jun 23 18:34:44 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

More changes to make these files compatible
with WeBWorK2.0 and cached compartments
-- Mike

Revision 1251 - Directory Listing
Modified Mon Jun 23 16:24:32 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

Changes made to PGbasicmacros so that it can be cached.
Changes should be compatible with webwork1.8
--MIke

Revision 1250 - Directory Listing
Modified Mon Jun 23 15:43:11 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

Made changes required to allow caching of these files.
My tests indicate that these changes are compatible with webwork1.8
One possible problem might be the mail-to answer macros
which access the environement variable directly
I think I have this properly patched, but it has not been
tested yet.
--Mike

Revision 1238 - Directory Listing
Modified Fri Jun 20 19:05:38 2003 UTC (9 years, 11 months ago) by lr003k
Original Path: trunk/pg

Matrices now take math constants.

Revision 1237 - Directory Listing
Modified Fri Jun 20 18:59:44 2003 UTC (9 years, 11 months ago) by lr003k
Original Path: trunk/pg

Student answer now displayed in a html table given by jones's
display matrix method in PGmatrixmacros. The braces were giving
me headaches so I set the option to none, at least for now.

Revision 1161 - Directory Listing
Modified Fri Jun 13 17:36:10 2003 UTC (9 years, 11 months ago) by lr003k
Original Path: trunk/pg

Was not accepting negative answers, the sign problem is fixed now.

Revision 1158 - Directory Listing
Modified Fri Jun 13 17:12:18 2003 UTC (9 years, 11 months ago) by sh002i
Original Path: trunk/pg

rollback change to the way ImageGenerator::add is called.
-sam

Revision 1155 - Directory Listing
Modified Fri Jun 13 02:33:56 2003 UTC (9 years, 11 months ago) by sh002i
Original Path: trunk/pg

changes to the math_ev3 functions in PGbasicmacros.pl to support new
interface to ImageGenerator and some cleanup.
-sam

Revision 1140 - Directory Listing
Modified Thu Jun 12 19:14:38 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

Answer labels are now prefixed by a Quiz prefix which allows more
than one problem to appear on the same page.
-- Mike

Revision 1127 - Directory Listing
Modified Wed Jun 11 19:18:19 2003 UTC (9 years, 11 months ago) by lr003k
Original Path: trunk/pg

Was working from an older copy before my last update, sorry.

Revision 1126 - Directory Listing
Modified Wed Jun 11 18:34:40 2003 UTC (9 years, 11 months ago) by jj
Original Path: trunk/pg

Fixed isPrime, which had said that 4 was prime, and shortened its loop.

Revision 1123 - Directory Listing
Modified Wed Jun 11 15:28:47 2003 UTC (9 years, 11 months ago) by lr003k
Original Path: trunk/pg

Ok, there is the ans_array_filter added which allows for the answer to be coming from the ans_array.

Revision 1122 - Directory Listing
Modified Wed Jun 11 14:54:27 2003 UTC (9 years, 11 months ago) by lr003k
Original Path: trunk/pg

Added two methods for naming the blanks in ans_array. The names now have the format ArRaY3[1,0,2] (this would be the name of
the 3rd answer (it's taken from main::answer_count which is then incremented so the answer before it is AnSwEr2 and the
answer after it is AnSwEr4) and it would be the second matrix or vector in the answer ( I need to take multiple vectors for
things like basis cmp, so ans_array_extension puts the vectors in different locations) and the 0 and 2 are row and column in
that matrix or vector.

Revision 1121 - Directory Listing
Modified Wed Jun 11 14:47:59 2003 UTC (9 years, 11 months ago) by lr003k
Original Path: trunk/pg

I removed the subroutine answer_matrix since it really belongs in basic macros with the other answer blank methods.

Revision 1120 - Directory Listing
Modified Wed Jun 11 14:46:35 2003 UTC (9 years, 11 months ago) by lr003k
Original Path: trunk/pg

I've added ans_array and ans_array extension and moved answer_matrix here since this is probably where it should be with all
the other answer blank methods. I still have to comment the code.

Revision 1117 - Directory Listing
Modified Wed Jun 11 04:00:37 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

Added a feature to correspond to a change made in process_answers in Translator.pm.

 Each answer
evaluator is given the
answer AND the answer label (e.g. AnSWer1) of the answer.  The label
is placed in the answer hash at $hash{ans_label} for use by filters
that need to know the label of the answer they are evaluating.

--Mike

Revision 1115 - Directory Listing
Modified Wed Jun 11 02:43:42 2003 UTC (9 years, 11 months ago) by apizer
Original Path: trunk/pg

Fixed error concerning variable $string.
Cleaned up how polynomials are displayed.

Arnie

Revision 1102 - Directory Listing
Modified Tue Jun 10 16:23:47 2003 UTC (9 years, 11 months ago) by lr003k
Original Path: trunk/pg

ok, I'm pretty sure that this one is the one we want. Unfortunately the other one was an old one, that cmpl_cmp4 was not used
anywhere and I had removed it later, and this one has multi_cmp. Sorry for all the confusion.

Revision 1097 - Directory Listing
Modified Mon Jun 9 23:26:19 2003 UTC (9 years, 11 months ago) by jj
Original Path: trunk/pg

Slightly better handling of top_labels in tth mode when force_tex is set; namely
it ignores the labels instead of letting the TeX code confuse tth so badly that
the matrix is basically lost.

Revision 1094 - Directory Listing
Modified Mon Jun 9 22:46:25 2003 UTC (9 years, 11 months ago) by jj
Original Path: trunk/pg

Fixed bug when the function is sampled at a point where it is not defined.

Revision 1091 - Directory Listing
Modified Mon Jun 9 21:53:11 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

Added > /dev/null tags to the commands which run tex and dvi for
HTML_img mode.  These will probably work now for the most part.
I don't know how well this will work if there is an error in
getting either tex or dvips to run.

For many problems using WeBWorK1.8 and typeset3 mode  thing work fine.
Please submit example problems where the images don't show up or some
other image related error occurs as bugs to
http://webwork3.math.rochester.edu/bugzilla
--Mike

Revision 1090 - Directory Listing
Modified Mon Jun 9 21:24:08 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

Fixed a patch to round (and Round) originally due to Mark Schmitt
which didn't get included in the latest updates and transfer to pg
--Mike

Revision 1088 - Directory Listing
Modified Mon Jun 9 21:05:11 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

Commented out code  that is not used (I believe)

comp_cplx4 and cplx_cmp4

-- Mike

Revision 1080 - Directory Listing
Modified Mon Jun 9 17:49:36 2003 UTC (9 years, 11 months ago) by apizer
Original Path: trunk/pg

remove unneccsary shebang lines

Arnie

Revision 1079 - Directory Listing
Modified Mon Jun 9 17:36:12 2003 UTC (9 years, 11 months ago) by apizer
Original Path: trunk/pg

removed unneccesary shebang lines

Revision 1073 - Directory Listing
Modified Mon Jun 9 13:30:46 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

This module contains IO used in saving an answer to a file.
--Mike

Revision 1072 - Directory Listing
Modified Mon Jun 9 02:27:04 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

The file PGcomplexmacros.pl is partially in sync with the version in
courseScripts.  I need advice on the latest versions of some of the
subroutines from Liam.
--Mike

Revision 1071 - Directory Listing
Modified Mon Jun 9 02:26:17 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

Bringing these files in sync with the latest versions in the
courseScripts CVS
--Mike

Revision 1070 - Directory Listing
Modified Mon Jun 9 02:02:20 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

Bringing this version of Matrix.pm up to date with the latest in
courseScripts.
--Mike

Revision 1069 - Directory Listing
Modified Mon Jun 9 02:01:41 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

Bringing this version into sync with the latest version in
courseScripts.
In particular dvipng is active in this script to make HTML_img
useable in WeBWorK2.0.  Not yet finished with this.
--Mike

Revision 1068 - Directory Listing
Modified Mon Jun 9 01:59:37 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

Updating the copy of PGchoicemacros.pl to the latest version available
in courseScripts
--Mike

Revision 1066 - Directory Listing
Modified Mon Jun 9 00:54:33 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

Adding a newer version of PGmatrixmacros.pl
--Mike

Revision 1064 - Directory Listing
Modified Mon Jun 9 00:34:51 2003 UTC (9 years, 11 months ago) by gage
Original Path: trunk/pg

Adding recent macro files to the pg collection
--Mike

Revision 1050 - Directory Listing
Added Fri Jun 6 21:39:42 2003 UTC (9 years, 11 months ago) by sh002i
Original Path: trunk/pg

moved PG modules and macro files from webwork-modperl to pg
-sam

aubreyja at gmail dot com	ViewVC Help
Powered by ViewVC 1.0.9