Groups > comp.graphics.apps.gnuplot > #2903

extracting data from .gnu file

Newsgroups	comp.graphics.apps.gnuplot
Date	2015-05-10 15:20 -0700
Message-ID	<d70469ab-ccd5-4f79-9ff2-24dae78036a1@googlegroups.com> (permalink)
Subject	extracting data from .gnu file
From	foice <franceschini.roberto@gmail.com>

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Hello I know very little on gnuplot and I am wondering how much data manipulation can be done, besides plotting.

I have histograms in a .gnu file that somebody gives me in the format

# comments
  set title "sqrt(p^2(5)) distribution" font "Helvetica, 20"
  set xlabel "sqrt(p^2(5))" font "Helvetica, 20"
  set ylabel "d{/Symbol s}/dsqrt(p^2(5))" font "Helvetica, 20"
  set xrange [    0.00000:  40.00000]
  plot "-" with histeps
     4.50000        3986.18        1.27863
     5.50000        3986.18        1.27863
     6.50000        3986.18        1.27863
 e

  set title "m(5) distribution" font "Helvetica, 20"
  set xlabel "m(5)" font "Helvetica, 20"
  set ylabel "d{/Symbol s}/dm(5)" font "Helvetica, 20"
  set xrange [    0.00000:  40.00000]
  plot "-" with histeps
     4.50000        3986.18        1.27863
     5.50000        3986.18        1.27863
     6.50000        3986.18        1.27863
 e

I would like to extract all the data from this file to combine, for instance, the m(5) histogram that I have in several files (combine means do a weighted average, in case it matters).

So I was wondering if there is a way to have gnuplot to load the entire .gnu file and then somehow store and handle this data in gnuplot. In a normal programming language I would fill an array with the 3 columns of each histogram and then I would perform the combination using these arrays. Can I do this operation in gnuplot instead? or gnuplot is just for plotting not for manipulating the data?

Thanks for your replies.
Roberto

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extracting data from .gnu file foice <franceschini.roberto@gmail.com> - 2015-05-10 15:20 -0700
  Re: extracting data from .gnu file Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2015-05-14 00:29 +0200

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