ruby - How to create a multi-page PDF-file with Gnuplot? -


i make dozen of plots gnuplot on mac via ruby-gnuplot. if re-run ruby script, number of open windows plots doubles. if output these plots in pdf opened in preview, file automatically updated after every re-run , don't need bother closing numerous windows.

currently can achieve 1 plot per pdf-file:

gnuplot.open |gp|   gnuplot::plot.new(gp) |plot|     plot.arbitrary_lines << "set terminal pdf \n set output 'figures.pdf'"     # ...   end end

how can make single pdf figures gnuplot?

hmm, @ least on gnuplot un*x, multipage output postscript , pdf default - long don't either change terminal type nor reassign output file, plot ends on new page.

i.e. do:

set terminal pdf set output "multipageplot.pdf" plot x, x*x plot sin(x), cos(x) set output ""

and end 2 pages in pdf file, 1 containing line/parabola, other sine/cosine.

to clarify: important thing issue plot commands in sequence, without changing output file nor changing terminal type. gnuplot won't append existing pdf file.


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