如何在gnuplot行中添加间隙? [英] How to add a gap in gnuplot line?

问题描述

我有一个gnuplot线图.我想在行中添加一个空格(中断)以表示缺少数据.我该怎么办?

I have a gnuplot line plot. I'd like to add a gap (break) in the line to signify lack of data. How can I do that?

例如，假设我的数据介于x = 10-> 100和200-> 500之间.所以我要在10和100之间设置一条线(同一条线，以便图例匹配)，然后在100和200之间设置一条间隙，再在200和500之间设置一条线.

For example, let's say I have data between x=10->100, and also 200->500. So I want a line (the same line, so the legend matches) between 10 and 100, then a gap between 100 and 200, and again the line between 200 and 500.

我尝试添加空数据点(即- y值)，但是gnuplot高兴地对这些点进行插值.

I have tried adding empty datapoints (i.e. - y values), but gnuplot happily interpolates those points.

推荐答案

两者之间有一个非常细微的区别:

There's a very subtle difference between:

plot 'data' u 1:2 w lines

和

plot 'data' u 1:($2) 2 lines

就您而言，我认为应该这样做:

In your case, I think it should work to do:

set datafile missing '-'
plot 'data' u 1:($2) w lines

(注意:这将导致与我将在下面描述的空白行方法产生细微的差异).

(Note: this results in a subtlely different plot than the blank line method I'll describe next).

另一种实现方法是在数据文件中要保留空白的地方绘制一条空白行.

Another way to do it is to just plot a blank line in the datafile where you want to have a gap.

例如:

#data
10 15
20 30
100 17

200 25
300 12
500 16

，然后使用plot 'data' u 1:2 w lines或plot 'data' u 1:($2) w lines进行绘制.两者都应产生相同的情节.

and then plot with either plot 'data' u 1:2 w lines or plot 'data' u 1:($2) w lines. Both should produce an identical plot.

有关更多信息，请参见gnuplot中的help missing.

for more information, see help missing in gnuplot.

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