其他 - 如何在gnuplot中的x方向上制作一个填充区域？

这是一个有用的技巧，它使用3D绘图样式with zerror，然后设置视角，使其看起来像2D x / y绘图。我没有足够的数据来复制显示的图，所以我仅使用一个垃圾数据文件来显示图的工作原理：

# 3D plot style "with zerror" takes 5 columns of input
#    x y z zlow zhigh
# We will choose a view angle such that "z/zlow/zhigh" is the horizontal axis
# "x" is the vertical axis
# "y" is unused because it is along the line of sight
# For your data as described
rho1 = 1   # column 1
rho2 = 2   # column 2
c = 3      # nominal y value, we use it for X
junk = 0   # unused constant coordinate
rhomean(c) = (column(rho1) + column(rho2)) / 2.

set view 270, 0 
set view azimuth -90
unset ytics
set zlabel "ρ"    # horizontal axis in this projection
set xlabel "C"    # vertical axis in this projection

set zrange [0:50] # Note how this affects the horizontal axis!

splot "data" using c:(junk):(rhomean(c)):rho1:rho2 with zerror lt black fc "gold"

在with zerror打印样式和set view azimuth命令都需要的gnuplot的reasonbly当前版本。