i think what you want to do is create a temporary file; that way, you can store the plot data in it. and not have it overwritten.

according to the cookbook, you could use tmpnam. there was a posting with that in the last couple of days (check "newest nodes"). i prefer File::Temp.

something like

use File::Temp;
my $tfname = File::Temp::tempnam($tmpdir, "math.")
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will get you *the name* for a create a temporary file with the prefix "math". you'll have to write the stuff in the loop to it yourself.

...wufnik -- in the world of the mules there are no rules --