I tried the problem with different seed (used SRAND(406); etc directly in the PG file) and the images behave as expected - they change when the seed changes. So you should probably look for the error outside the pg file.
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I'm not discovering my error, so I'm asking for help. The problem generates a sinusoid with random frequency and asks students to identify the graph of the function. It works the first time, but fails to work when the student or prof uses get a new version of the problem. The frequency is changed in the question formulation, but the graphs are not changed. I've checked the macro files, set $refreshCachedImages = 1 in various places.
Here's the code, Thanks
DOCUMENT();
loadMacros("PG.pl",
"PGstandard.pl",
"PGchoicemacros.pl",
"PGgraphmacros.pl",
"extraAnswerEvaluators.pl",
"MathObjects.pl",
"PGcourse.pl"
);
TEXT(beginproblem());
Context("Numeric");
Context("Numeric")->functions->add(
step => {
class => 'Parser::Legacy::Numeric',
perl => 'Parser::Legacy::Numeric::do_step'
},
);
$showPartialCorrectAnswers = 1;
#$a = 2;
#$b = 3;
Context()->variables->add(t=>'Real');
Context()->variables->add(F=>'Real');
$func = Formula("sin(2 pi F t)");
@eq = ("\( y=-2f(-t) \)",
"\( y=2f(-t) \)",
"\( y=-2f(t) \)",
"\( y=-f \left( - \frac{1}{2} t \right) \)",
"\( y=-\frac{1}{2} f(-t) \)",
"\( y=f \left( \frac{1}{2} t \right) \)" );
@descript = ("is a reflection about both the \(t\)-axis and \(y\)-axis as well as a vertical stretch by a factor of 2.",
"is a horizontal reflection about the \(y\)-axis as well as a vertical stretch by a factor of 2.",
"is a vertical reflection about the \(t\)-axis as well as a vertical stretch by a factor of 2.",
"is a reflection about both the \(t\)-axis and \(y\)-axis as well as a horizontal stretch by a factor of 2.");
$p1[0] = FEQ("step(t) - step(t-1) for t in <-1,10> using color:blue and weight:2");
$p2[0] = FEQ("step(t) - step(t-0.5) for t in <-1,10> using color:blue and weight:2");
$p3[0] = FEQ("step(t) - step(t-2) for t in <-1,10> using color:blue and weight:2");
$p4[0] = FEQ("step(t+1) - step(t) for t in <-1,10> using color:blue and weight:2");
$p1[1] = FEQ(qq! step(t) - step(t-0.5) + step(t) - step(t-2) for t in <-1,10> using color:blue and weight:2!);
##$graphf = init_graph(@opts);
## (plot_functions($graphf,"$f for x in <-$dom,$dom> using color:blue"))[0]->steps(250);
## $labelf = new Label(@gr_lab, 'y = f(x)', 'blue' , 'center', 'center');
## $graphf->lb($labelf);
$gr = init_graph(-2,-2,10,4,'axes'=>[0,0],'ticks'=>[6,6] );
$gr->lb('reset');
for ($i = -2; $i <= 4; $i++) { if ($i != 0) {
$gr->lb(new Label(-.1,$i,$i,'black','right','middle')) }};
for ($i = -1; $i <= 5; $i++) {
$gr->lb(new Label(2*$i,-.2,2*$i,'black','center','top')) };
$gr->lb(new Label(-.2,4.5,"y",'black','right','top'));
$gr->lb(new Label(9.5,-.2,"t",'black','right','top'));
$gr->lb(new Label(3.5,4,"s(t)",'black','left','bottom'));
## parentheses in ($fn1) are necessary
($f1n) = plot_functions( $gr, $p1[1] );
$f1n->steps(200);
$orig = image(insertGraph($gr),width => 400,height => 300,tex_size => 600);
$F = random(1,5,1);
$g[0] = "sin(2*pi*$F*t) for t in <-1,1> using color:blue and weight:2";
$g[1] = "sin(2*pi*(-$F*t)) for t in <-1,1> using color:blue and weight:2";
$g[2] = "sin(pi*$F*t) for t in <-1,1> using color:blue and weight:2";
$g[4] = "cos(2*pi*$F*t) for t in <-1,1> using color:blue and weight:2";
$g[3] = "-cos(2*pi*$F*t) for t in <-1,1> using color:blue and weight:2";
$g[5] = "sin(0.5*pi*$F*t) for t in <-1,1> using color:blue and weight:2";
$graph[0] = init_graph(-1,-2,1,2,'axes'=>[0,0],'ticks'=>[8,8] );
$graph[1] = init_graph(-1,-2,1,2,'axes'=>[0,0],'ticks'=>[8,8] );
$graph[2] = init_graph(-1,-2,1,2,'axes'=>[0,0],'ticks'=>[8,8] );
$graph[3] = init_graph(-1,-2,1,2,'axes'=>[0,0],'ticks'=>[8,8] );
$graph[4] = init_graph(-1,-2,1,2,'axes'=>[0,0],'ticks'=>[8,8] );
$graph[5] = init_graph(-1,-2,1,2,'axes'=>[0,0],'ticks'=>[8,8] );
for ($j = 0; $j <=5; $j++) {
$graph[$j]->lb('reset');
$graph[$j]->lb(new Label(-.07,-1,-1,'black','right','middle'));
$graph[$j]->lb(new Label(-.07,1,1,'black','right','middle'));
for ($i = -3; $i <= 3; $i++) { if ($i != 0) {
$graph[$j]->lb(new Label(0.25*$i,-.2,0.25*$i,'black','center','top')) }};
$graph[$j]->lb(new Label(-.05,1.9,"y",'black','right','top'));
$graph[$j]->lb(new Label(0.95,0.1,"t",'black','right','bottom'));
plot_functions( $graph[$j], $g[$j]);
$fig[$j] = image(insertGraph($graph[$j]),width => 240,height => 180,tex_size => 200); };
# $pick = random(0,3,1);
# if ( $pick != 0 ) { $temp_eq = $eqn[0];
# $temp_gr = $fig[0];
# $eq[0] = $eq[$pick];
# $fig[0] = $fig[$pick];
# $eq[$pick] = $temp_eq;
# $fig[$pick] = $temp_gr};
$mc = new_multiple_choice();
$mc->qa('On a separate piece of paper, sketch an accurate graph of this function for \( F = $F \) and \( t \in [-1, 1] \). Which (if any) of the graphs below matches the graph you drew?','$fig[0]');
$mc->extra('$fig[1] $BR $BITALIC(click on image to enlarge)$EITALIC',
'$fig[2] $BR $BITALIC(click on image to enlarge)$EITALIC',
'$fig[3] $BR $BITALIC(click on image to enlarge)$EITALIC',
'$fig[4] $BR $BITALIC(click on image to enlarge)$EITALIC',
'$fig[5] $BR $BITALIC(click on image to enlarge)$EITALIC');
$mc->makeLast('None of the above');
## force a refresh of the image after changes
$refreshCachedImages = 1;
Context()->texStrings;
BEGIN_TEXT
This problem reflects Problem 1.21a in the text
$PAR
Consider the function
$BR
$BR
\( y = $func \).
$BR
$BR
\{ $mc->print_q() \} $BR
\{ $mc->print_a() \}
END_TEXT
Context()->normalStrings;
ANS(radio_cmp($mc->correct_ans));
## force a refresh of the image after changes
$refreshCachedImages = 1;
Context()->texStrings;
SOLUTION(EV3(<<'END_SOLUTION'));
$PAR
$BBOLD SOLUTION $EBOLD
$PAR
Setting \( F = $F \) gives the function \( y = \sin(2 \pi $F t) \). This has $F cycles in one unit of time. It starts at zero at t = 0, since it is a sine and is positive for the first values greater than zero. Therefore the correct graph is
$PAR
$BCENTER
$fig[0]
$ECENTER
$BR
which is answer \{ $mc->correct_ans \}.
END_SOLUTION
Context()->normalStrings;
ENDDOCUMENT();
Hmm, I guess the string method on a Formula like that must include wrap-around parentheses.
I don't see the behavior. Here is the problem with our server, with that seed:
https://webwork.pcc.edu/webwork2/html2xml?&problemSeed=1331&answersSubmitted=0&sourceFilePath=Library/CollegeOfIdaho/setAlgebra_06_02_AddSubRationalExpressions/62IntAlg_19_AddSubRatExp.pg&displayMode=MathJax&courseID=anonymous&userID=anonymous&course_password=open&outputformat=simple
For me it comes out as
3/(y - 4) + 2/(y + 2)
Are you viewing math in "images" mode? It's one thing that might explain it. Sometimes there is a malformed .png image, and it gets cached, and you keep seeing it. Try things like (1) viewing with MathJax (2) adding $refreshCachedImages=1; and (3) going into the server where these images are stored and clearing them (I forget right now exactly where that is). If this is the issue, I don't know what causes it. But these things should fix it. And in any case, I think it's not something other users see because I think the cached image is specific to the user.
Danny, thanks for your suggestion, but:
I cannot see what you say should be there... This is a
"Past Answers" page for one problem, for one student. There is no
way to select anything or anybody else here. I suppose I can type
another id, and refresh, which would be faster than clicking my
way back out and back into another user, but it's still a purely
manual process. I tried * as a widlcard, it did not produce a
valid selection, it treated it as a literal *.
Am I in a wrong place?
It seems the path is TRULY obscure.
Thank you for your reply
I did this in order to be sure to modify the right thing
In /opt/webwork/pg/lib/WeBWorK/PG/Translator.pm
if ($ansCount > 1 ) {
$problem_result{msg} = maketext('I2n order to get credit for this problem all answers must be correct.') ;
}
I modified the fr.po, I restarted the apache, refreshed the page but I still have In order to get credit for this problem all answers must be correct.
I checked on the DB and I did not find anything too.
After an update of the Ubuntu distribution running out WeBWorK server, I have encountered the following error for a few of our problems. I have tried making the change to the XMLRPC/Lite.pm file mentioned here to try to deal with a possible issue with UTF-8 to no avail. Does anyone know what might be causing this?
Thanks,
Kyle
WeBWorK Error
Error messages
Error details
Problem2
1. ERROR caught by Translator while processing problem file:Library/PCC/BasicMath/MeanMedianMode/MeanMedianMode230.pg
****************
ERRORS from evaluating PG file:
Error detected while loading [PG]/macros/contextPercent.pl:
PG_macro_file_eval detected error at line 124 of file [PG]/lib/PGloadfiles.pm
Malformed UTF-8 character (fatal) at line 1 of (eval 8503), chunk 1.
The calling package is PGloadfiles
Died within PGloadfiles::compile_file called at line 172 of [PG]/lib/PGloadfiles.pm
from within PGloadfiles::loadMacros called at line 581 of [PG]/macros/PG.pl
from within main::loadMacros called at line 24 of (eval 8256)
****************
------Input Read
1 # WeBWorK problem written by Carl Yao
2 # Portland Community College
3 #
4 # Given a bar graph with two colors of bars, find the mean of two groups of data.
5 #
6 # Last edited by Carl Yao on 12/20/13
7 #
8 # ENDDESCRIPTION
9
10 ## DBCCSS('6.SP')
11 ## DBsubject(Statistics)
12 ## DBchapter(Exploratory data analysis/descriptive statistics)
13 ## DBsection(Summary statistics)
14 ## Institution(PCC)
15 ## Author(Carl Yao)
16 ## Level(2)
17 ## MO(1)
18 ## KEYWORDS('mean','application','bar graph')
19
20 ##############################################
21
22 DOCUMENT();
23
24 loadMacros(
25 "PGstandard.pl",
26 "PGgraphmacros.pl",
27 "MathObjects.pl",
28 "PGML.pl",
29 "contextPercent.pl",
30 "parserPopUp.pl",
31 "PCCmacros.pl",
32 "PGcourse.pl"
33 );
34
35 ##############################################
36
37 sub drawSquare {
38 my ($x,$y,$color) = @_;
39 $xside = ($xmax-$xmin)/40;
40 $yside = ($ymax-$ymin)/40;
41 $picture->moveTo($x,$y);
42 $picture->lineTo($x, $y-$yside, $color, 1);
43 $picture->lineTo($x+$xside, $y-$yside, $color, 1);
44 $picture->lineTo($x+$xside, $y, $color, 1);
45 $picture->lineTo($x, $y, $color, 1);
46 $picture->fillRegion([ $x+$xside/2, $y-$yside/2, $color ]);
47 }
48
49 sub sortSB {
50 my $ref_array = shift;
51 my $num = @$ref_array;
52 for my $i (0..$num-2) {
53 for my $j ($i+1..$num-1) {
54 if (${$ref_array}[$i]>${$ref_array}[$j]) {
55 (${$ref_array}[$i],${$ref_array}[$j]) = (${$ref_array}[$j],${$ref_array}[$i]);
56 }
57 }
58 }
59 }
60
61 ##############################################
62
63 Context("LimitedNumeric");
64
65 $numBars = 4;
66 $maxLimit = 30;
67
68 @terms = ("Fall","Winter","Spring","Summer");
69 @numMale = ();
70 @numFemale = ();
71
72 do {
73
74 $totalMale = 0;
75 $totalFemale = 0;
76
77 for my $i (0..$numBars-1) {
78 $numMale[$i] = int($maxLimit/2)+random(-1,1,2)*random(1,int($maxLimit/3),1);
79 $numFemale[$i] = $maxLimit - $numMale[$i];
80
81 $totalMale = $totalMale+$numMale[$i];
82 $totalFemale = $totalFemale+$numFemale[$i];
83 }
84
85 $meanMale = $totalMale/$numBars;
86 $meanFemale = $totalFemale/$numBars;
87
88 @numMaleSorted = @numMale;
89 sortSB(~~@numMaleSorted);
90 @numFemaleSorted = @numFemale;
91 sortSB(~~@numFemaleSorted);
92
93 $orderedMale = "";
94 $orderedFemale = "";
95 for my $i (0..$numBars-1) {
96 $orderedMale = $orderedMale."`$numMaleSorted[$i]`, ";
97 $orderedFemale = $orderedFemale."`$numFemaleSorted[$i]`, ";
98 }
99 chop($orderedMale);chop($orderedMale);
100 chop($orderedFemale);chop($orderedFemale);
101
102 $medianMale =
103 ($numMaleSorted[int($numBars/2)-1]+$numMaleSorted[int($numBars/2)])/2;
104 $medianFemale =
105 ($numFemaleSorted[int($numBars/2)-1]+$numFemaleSorted[int($numBars/2)])/2;
106
107 } until ( (($meanMale>$meanFemale) && ($medianMale<$medianFemale)) || (($meanMale<$meanFemale) && ($medianMale>$medianFemale)) );
108
109 $popup = PopUp(["?", "mean", "median"], "mean");
110
111 $yCover = $maxLimit;
112 $ystep = $yCover/6;
113 $xstep = 1;
114
115 $xmin = -$xstep; #The viewing window
116 $xmax = $numBars+2*$xstep;
117 $ymin = -$ystep;
118 $ymax = $yCover+$ystep;
119
120 $picture = init_graph($xmin,$ymin,$xmax,$ymax,
121 pixels=>[400,400]);
122 $picture->lb('reset');
123
124 $picture->moveTo(0,0);
125 $picture->lineTo($xmax-$xstep/2, 0, 'black',3);
126 $picture->moveTo(0,0);
127 $picture->arrowTo(0, $ymax-$ystep/2, 'black',3);
128
129 for my $i (0..$yCover/$ystep) {
130 $picture->stamps( closed_circle(0,$i*$ystep,'blue') );
131 $mark = $i*$ystep;
132 $picture->lb( new Label(-$xstep/2,$i*$ystep,"$mark",'black','center','middle'));
133 }
134
135 $picture->lb( new Label($xmax-$xstep/3,-$ystep/4,"terms",'black','right','middle'));
136 $picture->lb( new Label($xstep/4,$ymax-$ystep/3,"number of students",'black','left','middle'));
137
138 drawSquare($numBars-1,$ymax-$ystep/3,'red');
139 $picture->lb( new Label($numBars-1+$xstep/3,$ymax-$ystep/3,"male students",'red','left','top'));
140 drawSquare($numBars-1,$ymax-$ystep*2/3,'green');
141 $picture->lb( new Label($numBars-1+$xstep/3,$ymax-$ystep*2/3,"female students",'green','left','top'));
142
143 $alt = "This graph has two sets of bar graphs comparing male and female students in a certain class. ";
144 for my $i (0..$numBars-1) {
145 $picture->lb( new Label(($i+1)*$xstep,-$ystep/4,
146 $terms[$i],'black','center','middle'));
147
148 $picture->moveTo(($i+1-0.4)*$xstep,0);
149 $picture->lineTo(($i+1-0.4)*$xstep,$numMale[$i],'red',1);
150 $picture->lineTo(($i+1)*$xstep,$numMale[$i],'red',1);
151 $picture->lineTo(($i+1)*$xstep,0,'red',1);
152 $picture->fillRegion([ ($i+1-0.2)*$xstep,$numMale[$i]/2,'red' ]);
153 $picture->lb( new Label(($i+1-0.2)*$xstep,$numMale[$i]+$ystep/4,
154 "$numMale[$i]",'red','center','middle'));
155
156 $picture->moveTo(($i+1+0.4)*$xstep,0);
157 $picture->lineTo(($i+1+0.4)*$xstep,$numFemale[$i],'green',1);
158 $picture->lineTo(($i+1)*$xstep,$numFemale[$i],'green',1);
159 $picture->lineTo(($i+1)*$xstep,0,'green',1);
160 $picture->fillRegion([ ($i+1+0.2)*$xstep,$numFemale[$i]/2,'green' ]);
161 $picture->lb( new Label(($i+1+0.2)*$xstep,$numFemale[$i]+$ystep/4,
162 "$numFemale[$i]",'green','center','middle'));
163
164 $alt = $alt."In $terms[$i] Term, this class had $numMale[$i] male students and $numFemale[$i] female students. ";
165 }
166 chop($alt);
167
168 ##############################################
169
170 TEXT(beginproblem());
171 $refreshCachedImages = 1;
172
173 BEGIN_TEXT
174
175 This bar graph compares male and female student enrollment in a certain class at a community college in a certain school year. $PAR
176
177 $BCENTER
178 \{ image(insertGraph( $picture ), tex_size=>400, height=>400, width=>400, extra_html_tags => 'alt = "$alt" title = "$alt"') \}
179 $ECENTER
180 $PAR
181
182 END_TEXT
183 BEGIN_PGML
184
185 Answer the following questions.
186
187 *Question 1:* In these [`4`] terms, the mean number of male students in this class was [__________]{$meanMale}.
188
189 *Question 2:* In these [`4`] terms, the mean number of female students in this class was [__________]{$meanFemale}.
190
191 *Question 3:* In these [`4`] terms, the median of male students in this class was [__________]{$medianMale}.
192
193 *Question 4:* In these [`4`] terms, the median of female students in this class was [__________]{$medianFemale}.
194
195 *Question 5:* If you want to know, in all [`4`] terms, there are more male or female students, should you compare the mean or median?
196
197 [@$popup->menu()@]*
198
199 END_PGML
200
201 ##############################################
202
203 ANS( $popup->cmp() );
204
205 $midM1 = $numMaleSorted[$numBars/2-1];
206 $midM2 = $numMaleSorted[$numBars/2];
207 $outputM = "There are two numbers in the middle: `$midM1` and `$midM2`. The median is the mean of these two numbers: `\frac{$midM1+$midM2}{2}=$medianMale`.";
208
209 $midF1 = $numFemaleSorted[$numBars/2-1];
210 $midF2 = $numFemaleSorted[$numBars/2];
211 $outputF = "There are two numbers in the middle: `$midF1` and `$midF2`. The median is the mean of these two numbers: `\frac{$midF1+$midF2}{2}=$medianFemale`.";
212
213 if ($meanMale>$meanFemale) {
214 $output1 = "The mean of male students is bigger than that of female students, so more male students attended this class in all four terms. Notice that the median of female students is actually bigger than that of male students.";
215 } else {
216 $output1 = "The mean of female students is bigger than that of male students, so more female students attended this class in all four terms. Notice that the median of male students is actually bigger than that of female students.";
217 }
218
219 ##############################################
220
221 BEGIN_PGML_SOLUTION
222
223 ####Question 1
224
225 To find the mean number of male students in this class, we first add up the number of male students in all [`4`] terms:
226
227 [`` [@$numMale[0]@] + [@$numMale[1]@] + [@$numMale[2]@] + [@$numMale[3]@] = [$totalMale] ``]
228
229 Now we can find the mean by dividing the sum by the number of terms ([`4`]):
230
231 [`` \text{mean} = \frac{[$totalMale]}{4} = [$meanMale] ``]
232
233 *Solution:* In these [`4`] terms, the mean number of male students in this class was [`[$meanMale]`].
234
235 ----
236
237 ####Question 2
238
239 To find the mean number of female students in this class, we first add up the number of female students in all [`4`] terms:
240
241 [`` [@$numFemale[0]@] + [@$numFemale[1]@] + [@$numFemale[2]@] + [@$numFemale[3]@] = [$totalFemale] ``]
242
243 Now we can find the mean by dividing the sum by the number of terms ([`4`]):
244
245 [`` \text{mean} = \frac{[$totalFemale]}{4} = [$meanFemale] ``]
246
247 *Solution:* In these [`4`] terms, the mean number of female students in this class was [`[$meanFemale]`].
248
249 ----
250
251 ####Question 3
252
253 To find the median number of male students, we first need to order the number of male students in all [`4`] terms:
254
255 [$orderedMale]
256
257 [$outputM]
258
259 *Solution:* In these [`4`] terms, the median of male students in this class was [`[$medianMale]`].
260
261 ----
262
263 ####Question 4
264
265 To find the median number of female students, we first need to order the number of female students in all [`4`] terms:
266
267 [$orderedFemale]
268
269 [$outputF]
270
271 *Solution:* In these [`4`] terms, the median of female students in this class was [`[$medianFemale]`].
272
273 ----
274
275 ####Question 5
276
277 To compare the total number of male and female students in all [`4`] terms, we should compare the mean. The median is not accurate because some numbers were not considered; as a comparison, each number is used when the mean is calculated.
278
279 [$output1]
280
281 Don't think that the median is not useful. When there are outliers (very big or small numbers compared to most numbers in the group), the median is better than mean. That's why in newspapers, you will more than likely see "the median house price" than "the mean house price," etc.
282
283 END_PGML_SOLUTION
284
285 ENDDOCUMENT();I was able to use the directions here
https://michaelgage.blogspot.com/2015/06/whether-writing-full-text-book-or-just.html
to successfully embed WW problems from my server in a web page. A couple of questions:
(1) In the iframe code you pass a randomization seed using "&problemSeed=123567890". Is there a way to get the randomization to change whenever you refresh the page, or is there a way to have a button on the problem to change the randomization?
(2) The account I created to do all this (see the instructions above) has login_proctor permissions. I find that as long as one knows the file system path to the pg file, they can use this account to view the entire problem. Is there a way to impose a restriction so that this user can only view problem files in a certain directory or directories?
(3) Can I somehow change or add to the list of parameters in the iframe code so that the solution to the problem is only visible after a certain number of attempts, instead of being immediately accessible?
--Keir
Sorry, didn't see your answer before I wrote mine (I didn't refresh the page before answering). Yes, you are right, that is the issue, and the fix that I proposed as well.
I did the patch and restarted my webservers. Now when I hit the randomize button I get ... quite an error message (see below). Perhaps I can try to avoid the not equals sign.
--Keir
WebworkClient Errors
Errors:
not well-formed (invalid token) at line 1, column 7480, byte 7482 at /usr/lib/x86_64-linux-gnu/perl5/5.30/XML/Parser.pm line 187. PG_ANSWERS_HASHAnSwEr0001responseresponse_orderAnSwEr0001responsesAnSwEr0001answergroup_labelAnSwEr0001ans_labelAnSwEr0001ans_evaldebugevaluatorsCODE referencepre_filtersCODE referencerh_ansstudentsMustReduceUnions1showTypeWarnings1ignoreStrings1correct_valueparser::PopUp referencecorrect_ans_latex_string\text{=}ans_labelignoreInfinity1showUnionReduceWarnings1original_student_anserror_flagtypeValue (PopUp)score0showEqualErrors1error_messagecorrect_ans=student_anstypeMatchValue::Realpreview_latex_stringans_messagepreview_text_stringpost_filtersCODE referenceactive1AnSwEr0002ans_labelAnSwEr0002responseanswergroup_labelAnSwEr0002response_orderAnSwEr0002responsesAnSwEr0002active1ans_evalevaluatorsCODE referencedebugpre_filtersCODE referenceCODE referencecmp_prefilterpost_filtersCODE referenceCODE referencecmp_postfilterrh_ansshowTypeWarnings1correct_valueValue::Formula referenceignoreStrings1studentsMustReduceUnions1upToConstant0correct_ans_latex_string2showDomainErrors1ans_labelignoreInfinity1showUnionReduceWarnings1error_flagoriginal_student_anstypeValue (Formula)score0showEqualErrors1correct_ans2error_messagestudent_anspreview_latex_stringpreview_text_stringans_messageAnSwEr0003ans_evaldebugevaluatorsCODE referencepre_filtersCODE referencerh_anspreview_text_stringans_messagepreview_latex_stringtypeMatchValue::Realstudent_anscorrect_ansâ error_messageshowEqualErrors1score0typeValue (PopUp)original_student_anserror_flagshowUnionReduceWarnings1ignoreInfinity1ans_labelcorrect_ans_latex_string{\verbâ }showTypeWarnings1correct_valueparser::PopUp referenceignoreStrings1studentsMustReduceUnions1post_filtersCODE 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------The current problem set number setNumber is not defined
------The current problem number probNum is not definedinternal_debug_messagescourseIDmath212f2012WARNINGSV0FSTklOR1MKCjxici8+TW9yZTxici8+Cg== at /opt/webwork/webwork2/lib/WebworkClient.pm line 302.
End Errors
WeBWorK error
An error occured while processing your request. For help, please send mail to this site's webmaster (webmaster@localhost), including all of the following information as well as what what you were doing when the error occured.
Thu Jun 11 14:17:02 2020
Warning messages
Error messages
xmlrpcCall to renderProblem returned no result for
Call stack
The information below can help locate the source of the problem.
in WeBWorK::ContentGenerator::instructorXMLHandler::content called at line 233 of /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator.pm
in WeBWorK::ContentGenerator::go called at line 386 of /opt/webwork/webwork2/lib/WeBWorK.pm
Request information
Method POST
URI /webwork2/instructorXMLHandler
HTTP Headers
Sec-Fetch-Dest empty
X-Requested-With XMLHttpRequest
Accept-Language en-US,en;q=0.9
Cookie WeBWorKCourseAuthen.math212f2012=klockrid%09gSkr8At4yLwp9mSbpOQvGI1hE6tPQ7ct%091591899416; qa_noticed=1; username-gettysburgmath-org-8888="2|1:0|10:1590183835|32:username-XXX-org-8888|44:OGM1M2VmYmU4NmY5NGE4OWIxODBhNjJlNTY0YzE1YjM=|e8dc5529c5fd88e707d3080cac270ebc09eb701c648b1d7d310eb255fa565725"
Connection keep-alive
Accept */*
Content-Type application/x-www-form-urlencoded; charset=UTF-8
Accept-Encoding gzip, deflate, br
Content-Length 390
--Keir
WebworkClient Errors
Errors:
not well-formed (invalid token) at line 1, column 7480, byte 7482 at /usr/lib/x86_64-linux-gnu/perl5/5.30/XML/Parser.pm line 187. PG_ANSWERS_HASHAnSwEr0001responseresponse_orderAnSwEr0001responsesAnSwEr0001answergroup_labelAnSwEr0001ans_labelAnSwEr0001ans_evaldebugevaluatorsCODE referencepre_filtersCODE referencerh_ansstudentsMustReduceUnions1showTypeWarnings1ignoreStrings1correct_valueparser::PopUp referencecorrect_ans_latex_string\text{=}ans_labelignoreInfinity1showUnionReduceWarnings1original_student_anserror_flagtypeValue (PopUp)score0showEqualErrors1error_messagecorrect_ans=student_anstypeMatchValue::Realpreview_latex_stringans_messagepreview_text_stringpost_filtersCODE referenceactive1AnSwEr0002ans_labelAnSwEr0002responseanswergroup_labelAnSwEr0002response_orderAnSwEr0002responsesAnSwEr0002active1ans_evalevaluatorsCODE referencedebugpre_filtersCODE referenceCODE referencecmp_prefilterpost_filtersCODE referenceCODE referencecmp_postfilterrh_ansshowTypeWarnings1correct_valueValue::Formula referenceignoreStrings1studentsMustReduceUnions1upToConstant0correct_ans_latex_string2showDomainErrors1ans_labelignoreInfinity1showUnionReduceWarnings1error_flagoriginal_student_anstypeValue (Formula)score0showEqualErrors1correct_ans2error_messagestudent_anspreview_latex_stringpreview_text_stringans_messageAnSwEr0003ans_evaldebugevaluatorsCODE referencepre_filtersCODE referencerh_anspreview_text_stringans_messagepreview_latex_stringtypeMatchValue::Realstudent_anscorrect_ansâ error_messageshowEqualErrors1score0typeValue (PopUp)original_student_anserror_flagshowUnionReduceWarnings1ignoreInfinity1ans_labelcorrect_ans_latex_string{\verbâ }showTypeWarnings1correct_valueparser::PopUp referenceignoreStrings1studentsMustReduceUnions1post_filtersCODE referenceactive1responseanswergroup_labelAnSwEr0003responsesAnSwEr0003response_orderAnSwEr0003ans_labelAnSwEr0003AnSwEr0004ans_evalrh_ansshowEqualErrors1score0correct_ans-2error_messagepreview_latex_stringstudent_anspreview_text_stringans_messageignoreStrings1showTypeWarnings1correct_valueValue::Formula referencestudentsMustReduceUnions1upToConstant0ans_labelshowDomainErrors1correct_ans_latex_string-2error_flagoriginal_student_ansignoreInfinity1showUnionReduceWarnings1typeValue (Formula)post_filtersCODE referenceCODE referencecmp_postfilterpre_filtersCODE referenceCODE referencecmp_prefilterevaluatorsCODE referencedebugactive1responseresponse_orderAnSwEr0004responsesAnSwEr0004answergroup_labelAnSwEr0004ans_labelAnSwEr0004AnSwEr0005ans_labelAnSwEr0005responseanswergroup_labelAnSwEr0005responsesAnSwEr0005response_orderAnSwEr0005active1ans_evalevaluatorsCODE referencedebugpre_filtersCODE referencepost_filtersCODE referencerh_anscorrect_ans_latex_string{\verbâ }ans_labelignoreStrings1correct_valueparser::PopUp referenceshowTypeWarnings1studentsMustReduceUnions1typeValue (PopUp)showUnionReduceWarnings1ignoreInfinity1error_flagoriginal_student_anserror_messagecorrect_ansâ score0showEqualErrors1preview_text_stringans_messagetypeMatchValue::Realstudent_anspreview_latex_stringAnSwEr0006ans_evalrh_anstypeValue (Formula)showUnionReduceWarnings1ignoreInfinity1error_flagoriginal_student_anscorrect_ans_latex_string2showDomainErrors1ans_labelcorrect_valueValue::Formula referenceshowTypeWarnings1ignoreStrings1upToConstant0studentsMustReduceUnions1preview_text_stringans_messagestudent_anspreview_latex_stringcorrect_ans2error_messagescore0showEqualErrors1post_filtersCODE referenceCODE referencecmp_postfilterpre_filtersCODE referenceCODE referencecmp_prefilterevaluatorsCODE referencedebugactive1responseanswergroup_labelAnSwEr0006response_orderAnSwEr0006responsesAnSwEr0006ans_labelAnSwEr0006AnSwEr0007ans_evalpost_filtersCODE referencerh_ansshowEqualErrors1score0error_messagecorrect_ans=preview_latex_stringtypeMatchValue::Realstudent_anspreview_text_stringans_messagecorrect_valueparser::PopUp referenceignoreStrings1showTypeWarnings1studentsMustReduceUnions1ans_labelcorrect_ans_latex_string\text{=}original_student_anserror_flagshowUnionReduceWarnings1ignoreInfinity1typeValue (PopUp)pre_filtersCODE referenceevaluatorsCODE referencedebugactive1responseanswergroup_labelAnSwEr0007response_orderAnSwEr0007responsesAnSwEr0007ans_labelAnSwEr0007AnSwEr0008responseanswergroup_labelAnSwEr0008responsesAnSwEr0008response_orderAnSwEr0008ans_labelAnSwEr0008ans_evalpost_filtersCODE referencerh_anspreview_text_stringans_messagepreview_latex_stringtypeMatchValue::Realstudent_anserror_messagecorrect_ansANYshowEqualErrors1score0typeValue (String)error_flagoriginal_student_ansshowUnionReduceWarnings1ignoreInfinity1ans_labelcorrect_ans_latex_string\text{ANY}correct_valueValue::String referenceshowTypeWarnings1ignoreStrings1studentsMustReduceUnions1pre_filtersCODE referencedebugevaluatorsCODE referenceactive1AnSwEr0009ans_evalrh_ansstudent_anstypeMatchValue::Realpreview_latex_stringans_messagepreview_text_stringscore0showEqualErrors1correct_ans=error_messageignoreInfinity1showUnionReduceWarnings1error_flagoriginal_student_anstypeValue (PopUp)studentsMustReduceUnions1correct_valueparser::PopUp referenceshowTypeWarnings1ignoreStrings1correct_ans_latex_string\text{=}ans_labelpost_filtersCODE referenceevaluatorsCODE referencedebugpre_filtersCODE referenceactive1responseresponse_orderAnSwEr0009responsesAnSwEr0009answergroup_labelAnSwEr0009ans_labelAnSwEr0009AnSwEr0010ans_labelAnSwEr0010responseresponsesAnSwEr0010response_orderAnSwEr0010answergroup_labelAnSwEr0010active1ans_evalpost_filtersCODE referenceCODE referencecmp_postfilterrh_ansans_messagepreview_text_stringstudent_anspreview_latex_stringerror_messagecorrect_ans2score0showEqualErrors1typeValue (Formula)showUnionReduceWarnings1ignoreInfinity1error_flagoriginal_student_ansshowDomainErrors1correct_ans_latex_string2ans_labelstudentsMustReduceUnions1upToConstant0ignoreStrings1correct_valueValue::Formula referenceshowTypeWarnings1pre_filtersCODE referenceCODE referencecmp_prefilterdebugevaluatorsCODE referenceAnSwEr0011ans_evalpost_filtersCODE referencerh_ansscore0showEqualErrors1correct_ans=error_messagestudent_anstypeMatchValue::Realpreview_latex_stringans_messagepreview_text_stringstudentsMustReduceUnions1correct_valueparser::PopUp referenceignoreStrings1showTypeWarnings1correct_ans_latex_string\text{=}ans_labelshowUnionReduceWarnings1ignoreInfinity1error_flagoriginal_student_anstypeValue (PopUp)evaluatorsCODE referencedebugpre_filtersCODE referenceactive1responseanswergroup_labelAnSwEr0011response_orderAnSwEr0011responsesAnSwEr0011ans_labelAnSwEr0011AnSwEr0012ans_labelAnSwEr0012responseanswergroup_labelAnSwEr0012response_orderAnSwEr0012responsesAnSwEr0012active1ans_evalrh_anspreview_latex_stringstudent_anspreview_text_stringans_messageshowEqualErrors1score0error_messagecorrect_ans-2error_flagoriginal_student_ansshowUnionReduceWarnings1ignoreInfinity1typeValue (Formula)ignoreStrings1showTypeWarnings1correct_valueValue::Formula referencestudentsMustReduceUnions1upToConstant0ans_labelshowDomainErrors1correct_ans_latex_string-2post_filtersCODE referenceCODE referencecmp_postfilterevaluatorsCODE referencedebugpre_filtersCODE referenceCODE referencecmp_prefilteranswersflagsANSWER_ENTRY_ORDERAnSwEr0001AnSwEr0002AnSwEr0003AnSwEr0004AnSwEr0005AnSwEr0006AnSwEr0007AnSwEr0008AnSwEr0009AnSwEr0010AnSwEr0011AnSwEr0012KEPT_EXTRA_ANSWERSAnSwEr0001AnSwEr0002AnSwEr0003AnSwEr0004AnSwEr0005AnSwEr0006AnSwEr0007AnSwEr0008AnSwEr0009AnSwEr0010AnSwEr0011AnSwEr0012recordSubmittedAnswers1showHint1showPartialCorrectAnswers1PROBLEM_GRADER_TO_USEshowHintLimit1commenthintExists0solutionExists1refreshCachedImages0showpartialCorrectAnswers1problem_resulterrorsuserIDklockridcompute_time 0 wallclock secs ( 0.19 usr + 0.00 sys = 0.19 CPU)debug_messagestextPHNjcmlwdCB0eXBlPSJ0ZXh0L3gtbWF0aGpheC1jb25maWciPgogICAgICAgICAgICAgICAgICBN YXRoSmF4Lkh1Yi5Db25maWcoewogICAgICAgICAgICAgICAgICAgICBNYXRoTWVudToge3Nob3dD b250ZXh0OiB0cnVlfQogICAgICAgICAgICAgICAgICB9KTsKICAgICAgICAgICAgICAgICAgPC9z Y3JpcHQ+CgkJCQkgIDxzY3JpcHQgdHlwZT0idGV4dC9qYXZhc2NyaXB0Ij4gCgkJCQkgIGlmKCF3 aW5kb3cuTWF0aEpheCkgCgkJCQkgIChmdW5jdGlvbiAoKSB7CiAgCQkJCQl2YXIgc2NyaXB0ID0g 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------The current problem set number setNumber is not defined
------The current problem number probNum is not definedinternal_debug_messagescourseIDmath212f2012WARNINGSV0FSTklOR1MKCjxici8+TW9yZTxici8+Cg== at /opt/webwork/webwork2/lib/WebworkClient.pm line 302.
End Errors
WeBWorK error
An error occured while processing your request. For help, please send mail to this site's webmaster (webmaster@localhost), including all of the following information as well as what what you were doing when the error occured.
Thu Jun 11 14:17:02 2020
Warning messages
Error messages
xmlrpcCall to renderProblem returned no result for
Call stack
The information below can help locate the source of the problem.
in WeBWorK::ContentGenerator::instructorXMLHandler::content called at line 233 of /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator.pm
in WeBWorK::ContentGenerator::go called at line 386 of /opt/webwork/webwork2/lib/WeBWorK.pm
Request information
Method POST
URI /webwork2/instructorXMLHandler
HTTP Headers
Sec-Fetch-Dest empty
X-Requested-With XMLHttpRequest
Accept-Language en-US,en;q=0.9
Cookie WeBWorKCourseAuthen.math212f2012=klockrid%09gSkr8At4yLwp9mSbpOQvGI1hE6tPQ7ct%091591899416; qa_noticed=1; username-gettysburgmath-org-8888="2|1:0|10:1590183835|32:username-XXX-org-8888|44:OGM1M2VmYmU4NmY5NGE4OWIxODBhNjJlNTY0YzE1YjM=|e8dc5529c5fd88e707d3080cac270ebc09eb701c648b1d7d310eb255fa565725"
Connection keep-alive
Accept */*
Content-Type application/x-www-form-urlencoded; charset=UTF-8
Accept-Encoding gzip, deflate, br
Content-Length 390
Tue May 05 00:45:39 2020: Request 9985 was acted upon.
Transaction: Ticket created by lttcxyang12@gmail.com
Queue: Hosting
Subject: Technical Issues
Owner: Nobody
Requestors: lttcxyang12@gmail.com
Hello!
I hope this email finds you well. I am writing to hopefully get some
assistance with some technical issues regarding a WebWork course. I am
currently taking MAT 170 at ASU with Professor Firrozzaman, and I have
experienced a weird bug with the last couple of proctor password protected
tests.
When I go to click "grade test" it clears all my answers and brings me back
to the screen that asks me to enter the password. I have tried
numerous times- whether it be logging out of webwork, restarting my
computer, refreshing the page, but the timer for the test still runs, and I
am unable to submit my test.
If there is anything that I can do to fix this problem, please let me know
as soon as possible.
Thank you all so much for your time and help, and I hope you have a
wonderful evening.
--
Lucy Yang
ASU Architecture