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Re: Histograms, re-use auto yrange

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From	Karl Ratzsch <mail.kfr@gmx.net>
Newsgroups	comp.graphics.apps.gnuplot
Subject	Re: Histograms, re-use auto yrange
Date	Fri, 25 Jan 2019 09:57:02 +0100
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Am 22.01.2019 um 17:36 schrieb Stephen Prather:

> I am trying to plot multiple histograms, but I want them all to have the same yrange so that the bars are visually comparable across plots. BUT, I also want gnuplot to auto-range the y axis. I don't mind plotting in two passes (plot all, capture max yrange, replot all). But I don't know how to query the value of the yrange into a variable. I know about 'show yrange'. But I don't know how to use that information. I could script around gnuplot 
Apart from the "writeback"/"restore" feature, gnuplot also has a number
of status variables that contain the info you need.

GPVAL_Y_MIN / _MAX give the current (i.e. from the last plot) axis
range. Similar variables exist for all axes, and for the value ranges of
data (i.e. before axis expansion). You can see them all by entering
"show var G" on the gnuplot console.

  Karl

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Histograms, re-use auto yrange Stephen Prather <smprather@gmail.com> - 2019-01-22 08:36 -0800
  Re: Histograms, re-use auto yrange Ethan Merritt <eamerritt@gmail.com> - 2019-01-23 04:59 +0000
  Re: Histograms, re-use auto yrange Karl Ratzsch <mail.kfr@gmx.net> - 2019-01-25 09:57 +0100
    Re: Histograms, re-use auto yrange Stephen Prather <smprather@gmail.com> - 2019-01-25 10:51 -0800

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