輪廓圖中的關鍵顏色

Question

我正在嘗試製作輪廓圖。在當前的腳本我有如下圖所示：

這裏是我用來生產圖中的腳本：

#!/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 '' 

我的問題是我不喜歡的關鍵是如何顏色爲了表明價值觀，他們似乎隨機變化。有沒有辦法（gnuplot命令）使顏色逐漸變化，如下所示？

Answer 1

您必須手動更改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...