pgraph is a perl script which takes sets of X Y data and generates a (human readable) pic program that will produce the graphed data. The output is designed such that you can save it in a file and tweak it to make it fit your document. Try one and look at the output. The output is actually commented.
The graph is autosized and auto ticked.
The input data format is similar that of xgraph(1) , i.e.,
"sloped across 1 1 2 2 3 3 "straight across 1 4 2 4 3 4
You may set the graph title, the X title, and the Y title with the following control sequences in the data stream:
%T Graph title in +4 point font %X X axis title and/or units in +2 point font %Y Y axis title and/or units in +2 point font %fakemax-X <value> force graph to be that big %fakemax-Y <value> force graph to be that big %fakemin-X <value> force graph to be that small %fakemin-Y <value> force graph to be that small
graph -rev workstations | groff -TX75 %T Workstation Price / Performance, 6/93 %X SPECINT 92 Performance %Y Price in $1000’s "Dec AXP line 35 5 65 10 78 15 110 70 "Sun SPARC line 25 4 25 8 38 16 48 21 52 23 64 27
Since it is just a simple perl script, I tend to be constantly adding one more feature on the fly. Consult the script for the latest set of options. Development is typically done by using the closest set of options to generate the graph, massage the graph to do what you want, then add that set of changes as a new option.
This isn’t done as much as I would like. It isn’t integrated with the groff preprocessor yet. It doesn’t know about .GS/.GE things. I use it to manually generate a pic file and then include that.
I need to include some example data sets with pgraph.
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