使用多轴功能时，为什么右边的两个轴出现问题？

Question

在我的图形中定义轴时遇到一系列问题，我想与你分享，看看我们是否能找到错误

我在这个网站上找到了一个类似的用户。我的想法是左边有一个轴，右边有两个轴。但由于某种原因，它可能是愚蠢的，它似乎不正确。

我的代码如下：

set terminal postscript eps enhanced color "Times-Roman" 15
set output "TC_8.eps"
set multiplot
set xlabel "Temperature/{/Symbol \260} C"
set xrange [0:1500]
set key off
set autoscale  y
set autoscale y2


##### first plot


set yrange[0:15]
set ylabel "Thermal Diffusivity/(mm^2/s)" textcolor rgb "red"
plot "dt8.txt" using 1:2 smooth cspline lc rgbcolor "red"


##### Second plot

set y2range[0:40]
set y2tics nomirror
set y2label "Thermal Conductivity/ (W/m K))" offset 8, 0 textcolor rgb "green"

plot "dt8.txt" using 1:4 axes x1y2 smooth cspline lc rgbcolor "green"

##### Third plot

set y2range[0:2]
set y2tics no mirror
set y2label "Specific Heat/ (J/(g K))" offset 16, 0 textcolor rgb "blue"
plot "dt8.txt" using 1:3 axes x1y2 smooth cspline lc rgbcolor "blue"

unset multiplot

数据系列非常简单

20 11.466 0.733 28.894
499.6 6.338 1.119 24.38
998.9 5.3 1.292 23.542
1499 4.639 1.645 26.247

问题是右边的两个轴没有正确显示，数据线也是如此。

提前致谢

Answer 1

不要犹豫，添加你的情节结果，并在你找到类似的地方给出参考。

一种方法可能是更改图形的边距，并为第三个（分离的）轴绘制另一个虚拟图形。顺便说一下，你可以把两个数据线放到一个图中。

码：

reset session
set terminal postscript eps enhanced color "Times-Roman" 15
set output "TC_8.eps"

set multiplot
set key off
set autoscale  y
set autoscale y2

set lmargin 10
set tmargin 2
set bmargin 4
set rmargin 20

##### first plot
set xlabel "Temperature/{/Symbol \260} C"
set xrange [0:1500]

set ylabel "Thermal Diffusivity/(mm^2/s)" textcolor rgb "red"
set yrange[0:15]
set ytics nomirror

set y2range[0:40]
set y2tics nomirror
set y2label "Thermal Conductivity/ (W/m K))" offset -1,0 textcolor rgb "green"

plot "dt8.txt" using 1:2 axes x1y1 smooth cspline lc rgbcolor "red", \
    '' using 1:4 axes x1y2 smooth cspline lc rgbcolor "green"

unset xlabel 
unset ylabel
unset y2label
unset tics

##### Second plot
set y2range[0:2]
plot "dt8.txt" using 1:3 axes x1y2 smooth cspline lc rgbcolor "blue"

##### Third plot
set rmargin 10
set border 8     # only right border visible
set y2label "Specific Heat/ (J/(g K))" offset -1,0 textcolor rgb "blue"
set y2tics nomirror offset 0,0
plot -1    # plot some line out of range

unset multiplot
set output

会给出类似的东西：