我使用多色图布局了1,3个图。但是，标签与抽搐和数字之间的距离变得比不使用多重抽样时更大。
脚本是：
set terminal postscript eps enhanced # format of figure file
set output 'u_cmp.eps' # filename of output
set size 1.0,0.45 # size of canvas
set multiplot layout 1,3
set origin 0.0, 0.0
unset key # do not show text following keyword "plot"
set x2label "x(km)" font ",10" # x top
set ylabel "z(km)" font ",10"
set x2tics font ",10"
set ytics font ",10"
set size ratio 1.5
set x2tics out
set ytics out
set xrange [0:71]
set yrange [0:1000] reverse # y axis pointing downward
unset xtics
set ytics nomirror
set palette file "-"
0 0 1
1 1 1
1 0 0
e
set x2tics ( "0.0" 0.0, "0.5" 20, "1.0" 40, "1.5" 60)
set ytics ( "0.0" 0.0, "0.3" 300, "0.6" 600, "0.9" 900)
unset colorbox
set tics scale 0.6
set size 0.3, 0.45 # size of canvas
set origin 0.0, 0.0
set rmargin at screen 0.3
plot "./ustat_mute" binary array=(414,1000) format="%float" with image
set size 0.3, 0.45 # size of canvas
set origin 0.3, 0.0
set rmargin at screen 0.6
plot "../data_c12/ustat_mute" binary array=(414,1000) format="%float" with image
set colorbox
set colorbox size 0.1,0.45
set size 0.3,0.45
set origin 0.6,0.0
set rmargin at screen 0.9
plot "../data_c11/ustat_mute_cmp" binary array=(414,1000) format="%float" with image