Since GD::Graph has already been mentioned in this thread already and it appears that you would like vector output to use in Illustrator rather than bitmap output, I though I might mention some alternatives. If you have access to gnuplot you can use the Chart::Graph module. I believe you can produce EPS output from gnuplot. What platform are you using? I've use perl and the Mac::Glue module under MacOS 9 to script Adobe Illustrator (adding captions, titles and headers to graphs for publication). Perhaps you could do something similar Windows using OLE?

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Coyote