gnuplot循环与区间 [英] gnuplot for loop with interval

问题描述

我有下面的gnuplot脚本，它使用for循环将（x，y）格式的100个数据集绘制到一个绘图。但是，脚本只绘制2个数据集。任何人都可以帮忙吗？

I have the following gnuplot script that uses a for loop to plot 100 data sets of (x,y) format to one plot. However, the script only plots 2 data sets. Can anybody help? Thank you.

plotfile = "graph.eps"
set output plotfile
filename(n) = sprintf("%d_mod.int", n)
plot for [i = 400000:4000000:400000] filename(i) u 1:2 title sprintf("%d", i) w lp

推荐答案

这是一个bug，将在4.6.6和5.0 ，请参阅＃1429做for循环的不规则行为。

That is a bug, which will be fixed in 4.6.6 and 5.0, see #1429 Erratic behaviour of do for loops .

作为一种解决方法，您必须迭代较小的数字：

As a workaround you must iterate over smaller numbers:

plot for [i = 4:40:4] filename(i*100000) u 1:2 title sprintf("%d", i*100000) w lp

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