如何解决多图中的gnuplot重叠键图例
我试图绘制一个多图样
这一个。您可以在这里查看问题所在。我正在跟踪链接中的脚本: Why do I have a problem with the two axes on the right when I use the multi-axis function?
这是我的脚本:
reset
set encoding iso_8859_1
set term postscript eps enhanced color "Times-Roman,20"
set output 'Sglass555_strain_number_of_Aloxides_SR1e12_5a.eps'
set key at screen 0.9,screen 0.95 samplen 1.2 width -10 vertical maxrows 3 maxcols 3
set key font "Times-Roman,19"
data1 = "stress_strain_Sglass_xdir_SR1e12_S100p.txt"
data2 = "AlOx_BO0p4_MFFNVT_RFFNPT2"
data3 = "stress_strain_Sglass_xdir_SR1e12_S100p.txt"
data4 = "dissociated-and-formed-bonds-per-atom-pair2.txt"
data5 = "AlOx_BO0p3_MFFNVT_RFFNPT2"
data6 = "number_of_oxide_bond_BO0p3_strain.txt"
data7 = "number_of_oxide_bond_BO0p4_strain.txt"
set tics out
set autoscale y
set autoscale y2
set lmargin 10
set tmargin 6
set bmargin 4
set rmargin 14
set multiplot
# First and second
set xlabel "Strain (nm/nm)"
set xrange [0:0.4]
set ylabel "Relative number of bonds and events"
set yrange [-200:250]
set ytics nomirror
set y2label "Ratio of oxides (%)" offset -4
set y2range [0:100]
set y2tics nomirror
set grid lw 4 xtics,ytics
plot data4 u 1:4 w l lt 1 lw 2 lc rgb "red" title "Al-O bond dissociation event" axes x1y1,\
data4 u 1:7 w l lt 1 lw 2 lc rgb "orange" title "Al-O bond formation event" axes x1y1,\
data7 u 1:($3-3680) w l lt 1 lw 2 lc rgb "black" title "Al-O relative bond number" axes x1y1,\
data2 u 1:(($5/($3+$4+$5+$6+$7+$8+$9))*100) w lp lt 1 lw 2 pt 10 ps 1.5 lc rgb "blue" title "ratio of AlO_4" axes x1y2,\
data2 u 1:((($6+$7)/($3+$4+$5+$6+$7+$8+$9))*100) w lp lt 1 lw 2 pt 8 ps 1.5 lc rgb "skyblue" title "ratio of AlO_{5+}" axes x1y2,\
data2 u 1:((($3+$4)/($3+$4+$5+$6+$7+$8+$9))*100) w lp lt 1 lw 2 pt 6 ps 1.5 lc rgb "royalblue" title "ratio of AlO_{3-}" axes x1y2
# Third
unset xlabel
unset ylabel
unset y2label
unset tics
set y2range [0:25]
plot data3 u 1:2 w p pt 1 ps 1.5 pi 500 lc rgb "web-green" title "Stress-strain" axes x1y2
set rmargin 7
set border 8
set y2label "Stress (GPa)" offset -3
set y2tics nomirror offset 0,0
plot NaN title ""
unset multiplot
问题是,无论我做什么,似乎我都无法解决那个重叠的图例问题。我认为这是因为我使用了多个绘图命令,但是我不确定如何管理和控制这些图例内容。我希望有一个传说可以从其他传说中逃脱,包括3列或2列。
是否可以使用单个set key命令控制两个图例?还是我需要使用单独的set key命令?
解决方法
您可以使用keyentry
来解决此问题,请选中help keyentry
。
将以下行添加到您的第一批绘图命令中:
keyentry w p pt 1 ps 1.5 lc rgb "web-green" title "Stress-strain"
并将第二个绘图命令缩短为:
plot data3 u 1:2 w p pt 1 ps 1.5 pi 500 lc rgb "web-green" axes x1y2 notitle
添加:
仅出于完整性和参考目的,请在下面找到一个最小示例...
代码:
### 3 axes with legend entry
reset session
set multiplot
set samples 21
set lmargin 10
set tmargin 4
set bmargin 4
set rmargin 15
set key at screen 0.9,screen 0.95 vertical maxrows 2
set xlabel "x-axis for all"
set ylabel "First y-axis" tc "red"
set yrange [-10:10]
set y2label "Second y-axis" offset -2,0 tc "web-green"
set y2range [-20:20]
set y2tics nomirror
set grid xtics,ytics
# data for first and second y-axes
plot x w lp lc "red" pt 6 axes x1y1 title "first dataset",\
2*x w lp lc "red" pt 7 axes x1y1 title "second dataset",\
-3*x w lp lc "web-green" pt 6 axes x1y2 title "third dataset",\
-4*x w lp lc "web-green" pt 7 axes x1y2 title "fourth dataset",\
keyentry w lp lc "blue" pt 6 axes x1y2 title "fifth dataset",\
keyentry w lp lc "blue" pt 7 axes x1y2 title "sixth dataset"
# data for third y-axis
unset tics
unset xlabel
unset ylabel
unset y2label
set y2range[-40:40]
plot 5*x w lp lc "blue" pt 6 axes x1y2 notitle,\
6*x w lp lc "blue" pt 7 axes x1y2 notitle
# just to get 3rd y-axis
set border 8
set rmargin 7
unset xtics
set y2label "Third y-axis" offset -2,0 tc "blue"
set y2tics
plot NaN notitle
unset multiplot
### end of code
结果:
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