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Re: Use variable from datafile in plot title

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fcs pk wrote:

> Dear All,
> 
> I would like to use a variable from a data file as title for a plot.
> Something like:
> 
> var1 = './data_2' index 1000 using 4
> plot './data_1' index 1000 using 1:2 title var1
> 
> Well, obviously, the example I just gave doesnt work.  But I would
> like to know whether it is possible to do something similar in
> gnuplot? 

Suppose that somewhere in your file is a line like
# Next plot has title:     XX YY ZZ

You can use the string processing routines in gnuplot to get load
"XX YY ZZ" into a string variable:

gnuplot> grep_command = "grep title: myfile.dat"
gnuplot> titleline = system(grep_command)
gnuplot> index = strstrt(titleline, ": ")
gnuplot> plot_title = titleline[index+1:*]
gnuplot> plot .... title plot_tile

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Use variable from datafile in plot title fcs pk <fcsprk@gmail.com> - 2011-10-02 06:53 -0700
  Re: Use variable from datafile in plot title sfeam <sfeam@users.sourceforge.net> - 2011-10-02 10:00 -0700

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