Support TwoStones.org xygraph By Joan M. Garcia xygraph is a Perl script that displays x-y data. Possible output formats include X window and postscript. It uses pgperl , a perl wrapper of the pgplot graphics routine library. It turns out that the output of pgplot is really high quality, so xygraph produces much nicer graphs than Excel. Requirements You need pgplot and pgperl .
Usage Do xygraph -h for a list of options.
It expects a list of text files as input, with numbers in columns. You can also specify a title and labels for the axes, do logarithmic or semi-logarithmic representation and draw a regression line, among other things. The text files can include commands that control how to display the graphs. Well, in fact if you type the above you would get an X window with the graph.