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From: Michael <proximum@land.ru>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: Feature request : replot multiplot
Date: Wed, 08 Jan 2014 20:18:54 +0700
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Xref: csiph.com comp.graphics.apps.gnuplot:2239

Maybe this would be helpful?

1.dat:
1 2
2 3
3 4
4 5

2.dat:
2 3
3 4
4 5
5 6

3.dat:
1 6
2 7
3 8
4 9

stats '1.dat' using 2 name 'A'
stats '2.dat' using 2 name 'B'
stats '3.dat' using 2 name 'C'

min_val=(A_min<B_min ? A_min : B_min)
min_val=(min_val<C_min ? min_val : C_min)
max_val=(A_max>B_max ? A_max : B_max)
max_val=(max_val>C_max ? max_val : C_max)

set size 1.,1.
set origin 0.,0.

set multiplot

set origin 0.0,0.0
set size 0.3,0.5
set yrange [min_val:max_val]
plot '1.dat' using 1:2 with linespoints


set origin 0.3,0.0
set size 0.3,0.5
set yrange [min_val:max_val]
plot '2.dat' using 1:2 with linespoints


set origin 0.6,0.0
set size 0.3,0.5
set yrange [min_val:max_val]
plot '3.dat' using 1:2 with linespoints

unset multiplot
reset