gnuplot条件填充颜色

Question

gnuplot的新功能。可能是一个简单的问题，但帮助表示赞赏。

我正在绘制每个类别（从文件的第3-7列）中的5个部分的堆叠直方图。根据第二列数据（0或1）中的变量，切片的颜色可以是黑色，绿色，黄色，品红色，红色，或者分别是红色，品红色，黄色，绿色和黑色。我一直在尝试对此作品进行各种修改：

plot 'themesdat.txt' u 3 not lt rgb ($2?0xff5050:0x808080),\ 
'' u 4 not lt rgb ($2?0x966496:0x00ff66),\ 
'' u 5 not lt rgb 0xffff00,\ 
'' u 6 not lt rgb ($2?0x00ff66:0x966496"),\ 
'' u 7 :xticlabels(1) not lt rgb ($2?0x808080:0xff5050) 

该条件会产生未定义的值错误。正如我所说，可能v简单的问题，但我卡住了！

编辑：数据文件的样品（顶部6行）： -

#title band1, band2, band3, band4, band5, labelx, label1, ... label5 
#band colours: ff5050¸966496, ffff00, 00ff66, 808080 (reversed for 1,7,8,11,12,16,7,18,19) 
Satisfaction 1 43 15 0 16 26 0 "severe problems" probs " " help? fine 
Frustration 0 42 11 18 0 29 1 fine help problems "" "severe problems" 
CopingAbility 1 47 13 7 11 22 2 "severe problems" probs " " help? fine 
Category 1 0 0 0 0 0 3 "" "" "" "" "" 

此外编辑：我想这可能是不可能的 - 使用一个柱从数据文件中，以改变颜色。即使是更简单的结构，rgb（2美元）似乎也不起作用。

如果有人知道，否则......？

Answer 1

如果我理解正确，您可以尝试使用this question之一的方法，例如this answer。你也可以找到解释。

set terminal pngcairo size 960,600 
set output "conditional_fill.png" 

datafile="themesdat.txt" 
set yrange [0:100] 

set key out 
set style data histograms 
set style histogram rowstacked 
set boxwidth 0.8 relative 
set style fill solid 1.0 border -1 

set style line 3 lt 1 lc rgb "black" 
set style line 4 lt 1 lc rgb "green" 
set style line 5 lt 1 lc rgb "yellow" 
set style line 6 lt 1 lc rgb "magenta" 
set style line 7 lt 1 lc rgb "red" 

set style line 13 lt 1 lc rgb "red" 
set style line 14 lt 1 lc rgb "magenta" 
set style line 15 lt 1 lc rgb "yellow" 
set style line 16 lt 1 lc rgb "green" 
set style line 17 lt 1 lc rgb "black" 

color(x,y) = 10*x + y 

stats datafile u 2 nooutput 
n = STATS_records 

set multiplot 
do for [i=0:n-1] { 
    plot datafile u (0):xticlabels(1) notitle,\ 
     newhistogram "" at i, \ 
       "" every ::i::i u (style = color($2, 3), 0) notitle, \ 
       "" every ::i::i u 3 ls style title "severe problems", \ 
       "" every ::i::i u (style = color($2, 4), 0) notitle, \ 
       "" every ::i::i u 4 ls style title "probs",   \ 
       "" every ::i::i u (style = color($2, 5), 0) notitle, \ 
       "" every ::i::i u 5 ls style title " ",    \ 
       "" every ::i::i u (style = color($2, 6), 0) notitle, \ 
       "" every ::i::i u 6 ls style title "help?",   \ 
       "" every ::i::i u (style = color($2, 7), 0) notitle, \ 
       "" every ::i::i u 7 ls style title "fine" 
} 
unset multiplot 

这是结果：