I will also recommend PDL as the tool for you in this case. PDL usually works with the graphical interfaces PLPlot or PGPLOT, but you might might also want to try others, such as Gnuplot. Fortunately, Perl has modules for all that!

To finish, just a comment: are you sure that you want to make line plots of >100000 points? These might become a bit messy ...

In reply to Re: GDGraph for many data points? by hda
in thread GDGraph for many data points? by Niner710

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