在gnuplot中绘制两个轴 [英] Plotting two axes in gnuplot

问题描述

是否可以在gnuplot中绘制两条曲线，分别具有两个对应的轴，每个轴的比例都不同?

Is it possible to plot two curves, with two corresponding axes in gnuplot, each of which has a different scale?

例如，同一张图中的y=x**2和y=x**4(以相同的比例绘制时，它们的差异足以使不舒服".)

For example, y=x**2 and y=x**4 in the same graph (they vary enough to be "uncomfortable" when plotted with the same scale).

推荐答案

您可以自动处理轴，而不必自己缩放轴并保持自动缩放:

You can have the axes handled automatically without you having to scale them yourself and keep auto-scaling:

set terminal jpeg
set output 'graph.jpg'

set xrange [-10:10]
set ytics 10 nomirror tc lt 1
set ylabel '2*x' tc lt 1
set y2tics 20 nomirror tc lt 2
set y2label '4*x' tc lt 2
plot 2*x linetype 1, 4*x linetype 2 axes x1y2

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