轮廓图中的关键颜色

Question

我正在尝试制作轮廓图。在当前的脚本我有如下图所示：

这里是我用来生产图中的脚本：

#!/usr/bin/gnuplot 
set term png font ",18" enh size 1000,1000 
set view map 
unset surface 
set contour base 
set cntrparam level incremental 0.005, 0.02, 0.5 
set key at screen 1, 0.9, 0 
set rmargin 0.50 
# 
a=6.3457 
set xra[0.:2.60*a] 
set yra[0.:1.73*a] 
set xtics out nomirror 
set ytics axis in offset -4.0,0 nomirror 
set label "r (a.u)" at 3.4,-2.2 center 
set label "r (a.u)" at -1.7,2.5 rotate by 90 center 
set out 'M.1.-1.112.3.888.png' 
splot 'M.1.-1.112.3.888.dat' u 1:2:3 w l lw 2 t '' 

我的问题是我不喜欢的关键是如何颜色为了表明价值观，他们似乎随机变化。有没有办法（gnuplot命令）使颜色逐渐变化，如下所示？

Answer 1

您必须手动更改lintetypes，如：

set linetype 1 lc rgb "#B22222" 
set linetype 2 lc rgb "#B22233" 
set linetype 3 lc rgb "#B22244" 
set linetype 4 lc rgb "#B22255" 
# ect... 

OR

set style line 1 lc rgb "#B22222" 
set style line 2 lc rgb "#B22233" 
set style line 3 lc rgb "#B22244" 
set style line 4 lc rgb "#B22255" 
# ect...