I'd like to build a T-table with the first column x-coordinates and the second column y-coordinates. I'd like the first row to be a randomly-generated pair (x1,y1) and the last row to be a randomly-generated pair (x2,y2). I'd like the in-between rows to be x1+1, x1+2, x1+3, etc up to x2. But the number of these rows, as well as the contents therein, vary depending on what x1 and x2 are. I may be totally dreaming that it could be this customizable. But now I've got the curiosity bug to find out.
Hm... is it possible to define an array that starts with variable x1 then counts up by 1's to variable x2? Then use the length_array variable to define the number of rows in the table?
Here is an example that creates a table with rows for each x between two randomly selected values. Perhaps that will be sufficient for you to modify it for your needs:
loadMacros(
"MathObjects.pl",
"PGML.pl",
"niceTables.pl"
);
$x1 = random(-5,5,1);
$x2 = random($x1+1,$x1+5,1);
$f = Formula("x/2+1");
#
# The first row of the table is headers for the columns
# (formatted using LaTeX)
#
@xy = ([['\(x\)', header=>'CH'], ['\(y\)', header=>'CH']]);
#
# Add the rows to the table. The values are put between
# \( and \) so they will be formatted as mathematics
#
for $x ($x1..$x2) {
push(@xy, ['\('.$x.'\)', '\('.$f->eval(x => $x).'\)']);
}
#
# Create the table using DataTable(). The three stars are
# so that the LaTeX will be formatted after being inserted.
#
BEGIN_PGML
[@ DataTable( [ @xy ], align => "|c|c|", midrules=>1) @]***
END_PGML
Hope that gets you where you need to go.