Thanks! Missed that part...I updated my post with another example of code for this job. The OP's statement: I've lost a lot of weight lately, and wanted to plot it on a graph. seemed at first glance to imply something something different than a cgi application that dynamically creates graphs. So as the devil's advocate, this may still very well be a case where update data locally, generate cool image locally and use Perl to automagically upload cool image to website may still be a good way to go.

In reply to Re^3: Interpolating data slope for multiple points by Marshall
in thread Interpolating data slope for multiple points by oko1

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