gnuplot-用不同的颜色绘制不同的块 [英] gnuplot - plot different blocks with different color

问题描述

我在file.dat

中有这样的数据

2 2
5 5
7 3

100 102
130 80
116 134

-40 -100
-50 -60
-61 -58

我想用不同的颜色绘制每个块，

对特定颜色没有限制，而只是一些视觉上不同的颜色.

我这样尝试过linetype:

for [IDX=0:2] 'file.dat' i IDX u 1:2 with linespoints linetype IDX

它绘制了所有具有不同颜色的块，显然只有最后一个可见.

那么正确的方法是什么?

解决方案

这是正确的方法，但是必须使用两条空行才能使用index访问不同的块. >

而且，您应该从linetype 1开始，因为linetype 0是网格线的特殊线型:

2 2
5 5
7 3


100 102
130 80
116 134


-40 -100
-50 -60
-61 -58

和绘图命令

plot for [IDX=0:2] 'file.dat' index IDX u 1:2 with lp lt IDX+1

I have a data like this in a file.dat

2 2
5 5
7 3

100 102
130 80
116 134

-40 -100
-50 -60
-61 -58

I would want to plot each block in different color,

There is no restriction that a specific color, but just some visually different color.

I tried with linetype like this:

for [IDX=0:2] 'file.dat' i IDX u 1:2 with linespoints linetype IDX

it plots all the blocks with different color and obviously only last one is visible.

So what is the right way to do this?

解决方案

That is the right way, but you must have two blank lines in order to access different blocks with index.

And, you should start at linetype 1, because linetype 0 is a special linetype for the grid lines:

2 2
5 5
7 3


100 102
130 80
116 134


-40 -100
-50 -60
-61 -58

And the plot command

plot for [IDX=0:2] 'file.dat' index IDX u 1:2 with lp lt IDX+1

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