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From: Christoph Bersch <usenet@bersch.net>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: Multiplot question
Date: Tue, 26 Mar 2013 15:57:03 +0100
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Xref: csiph.com comp.graphics.apps.gnuplot:1734

Hi,

Am 26.03.2013 10:30, schrieb Dieter Britz:
> I have the following multiplot
[...]
> However, I would like the right-hand one stretched
> in the x-direction by a factor, but to keep its
> vertical height.

I tried around a bit with 'set size ratio', but the x-size remained the 
same, only the y-size changed:

set size square
set multiplot layout 1,2
plot sin(x)
set size ratio 0.8
plot sin(x)
unset multiplot


What I can come up with is some manual corrections:

Use margins of the left plot using the GPVAL_TERM_* variables which are 
provided after the first plot (see with 'show variables all') to 
calculate fixed margins for the right plot:

set size square
set multiplot layout 1,2
set size 0.4,1
plot sin(x)
top_margin = (1.0*GPVAL_TERM_YMAX)/GPVAL_TERM_YSIZE
bottom_margin = (1.0*GPVAL_TERM_YMIN)/GPVAL_TERM_YSIZE
left_margin = (1.0*GPVAL_TERM_XMIN)/GPVAL_TERM_XSIZE
right_margin = (1.0*GPVAL_TERM_XMAX)/GPVAL_TERM_XSIZE
set size noratio
set tmargin at screen top_margin
set bmargin at screen bottom_margin
set lmargin at screen 0.5+left_margin - 0.05
set rmargin at screen 0.5+right_margin + 0.05
plot sin(x)
unset multiplot

I hope, this is not the best solution ;-)
Christoph