[pstricks] Working with multiple data columns
brandon at 301south.net
Sat Jan 23 21:00:14 CET 2010
I often encounter a situation where I have many related data sets that I
would like to plot together in PStricks; however, most of the macros I am
familiar with expect two data columns: independent and dependent variable.
When working with data involving one independent and several dependent
variables, I find that the presentation of the data often depends on the
entire corpus of data, that you can't plot one data set without also
incorporating the others.
For example, see the attached figure. The source data for this figure is
"bottles", "sheet and film", and "fiber". However, I can't plot just the
straight data... I have to plot "bottles" + "sheet and film" + "fiber"
first, then "bottles" + "sheet and film" on top, then "bottles" on top of
that. Presently I compute these sums in an external program and produce
very specific derived data sets to plot. But if I want to change the
order of the layers, I have to recompute the data and generate a new data
This could be avoided if I could somehow perform computations on multiple
data sets within pstricks- I could then have data for bottles, data for
sheet and film, and data for fiber, and add them together as I need to
make the plot.
[hoping that the question is clear enough]-- is there a way to accomplish
this sort of thing in pstricks? I'm prettty familiar with the pst bundle
but I don't know much postscript. But I sense that I might have to wade
into postscript for this one.
Thanks in advance for any insights.
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