水平键在GNUPLOT中以垂直显示 [英] The horizontal key displays in vertical in GNUPLOT

问题描述

在gnuplot中，我使用了水平键，但是在输出屏幕上却显示了垂直.我尝试了所有替代方法，但发现很难做到这一点.

In gnuplot, I used the horizontal key, but it shows me vertical on the output screen. I tried every alternative but found difficult to do that.

set terminal wxt size 600,600 enhanced font 'times new roman,10' persist
set xlabel "X-Axis"
set ylabel "Y-Axis"
set multiplot layout 2,3
set key box
set key horiz
set key at screen 0.5, 0.40
set title "1st"
set xrange [0:20]
plot    tan((pi/180)*x)   title "Analytical"   w l  ls 1,\
        tan(2*(pi/180)*x) title "Observed"     w lp ls 2,\
        tan(3*(pi/180)*x) title "Experimental" w lp ls 3

set title "2nd"
set xrange [0:20]
plot    tan((pi/180)*x)   title "Analytical"   w l  ls 1,\
        tan(2*(pi/180)*x) title "Observed"     w lp ls 2,\
        tan(3*(pi/180)*x) title "Experimental" w lp ls 3

set title "3rd"
set xrange [0:20]
plot    tan((pi/180)*x)   title "Analytical"   w l  ls 1,\
        tan(2*(pi/180)*x) title "Observed"     w lp ls 2,\
        tan(3*(pi/180)*x) title "Experimental" w lp ls 3

unset multiplot

是否有其他选择?单击下面的输出，查看该图:

Is there any alternative possible?? See the plot by click on the output below:

推荐答案

您可以通过指定set key vertical maxrows 1来强制图例由单行组成:

You can force the legend to consist of a single row by specifying set key vertical maxrows 1:

set xlabel "X-Axis"
set ylabel "Y-Axis"
set multiplot layout 2,3
set key at screen 0.5, 0.40 center vertical height 1 box maxrows 1
set title "1st"
set xrange [0:20]
plot    tan((pi/180)*x)   title "Analytical"   w l  ls 1,\
    tan(2*(pi/180)*x) title "Observed"     w lp ls 2,\
    tan(3*(pi/180)*x) title "Experimental" w lp ls 3

set title "2nd"
set xrange [0:20]
plot    tan((pi/180)*x)   title "Analytical"   w l  ls 1,\
    tan(2*(pi/180)*x) title "Observed"     w lp ls 2,\
    tan(3*(pi/180)*x) title "Experimental" w lp ls 3

set title "3rd"
set xrange [0:20]
plot    tan((pi/180)*x)   title "Analytical"   w l  ls 1,\
    tan(2*(pi/180)*x) title "Observed"     w lp ls 2,\
    tan(3*(pi/180)*x) title "Experimental" w lp ls 3

unset multiplot

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