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Re: Read values from file as input values

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riehenringwg@gmail.com wrote:

> Hi
> I often come across the situation in which I want to specify the x,y-axes
> limits depending on the output-txt file that I get from simulations. More
> specifically: It would be very useful if there was a command that simply
> reads values from a .txt or .dat file and these values could be stored in
> variables specified in the gnuplot script (sth like dlmread in Matlab).
> I found a (not very elegant) way to do it anyway: plot the file,  extract
> the limits of the axes via the GPVAL command and close the plot and replot
> with the appropriate limits. However, I wonder if there is a more elegant
> way (since here everything has to be plotted twice & a lot of windows open
> and close)? Thx in advance. riehen

Several suggestions come to mind.

1) gnuplot> XRANGE = system("cat xrange.txt")
   gnuplot> XMIN = real(word(XRANGE,1))
   gnuplot> XMAN = real(word(XRANGE,2))
   gnuplot> set xrange [XMIN:XMAX]

2) Have the program that creates the file write an actual gnuplot command,
   e.g. have the file contain
             set xrange [123:456]
   rather than
             123 456
   gnuplot> load "xrange.txt"

3) gnuplot> stats "simulation.out" using X:Y
   gnuplot> set xrange [ stats_min_x : stats_max_x ]

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Read values from file as input values riehenringwg@gmail.com - 2013-02-19 04:27 -0800
  Re: Read values from file as input values sfeam <sfeam@users.sourceforge.net> - 2013-02-19 13:02 -0800
    Re: Read values from file as input values riehen <riehenringwg@gmail.com> - 2013-02-20 06:21 -0800
    Re: Read values from file as input values riehen <riehenringwg@gmail.com> - 2013-02-20 06:22 -0800

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