gnuplot:在某个点用线连接两个数据 [英] Gnuplot: connecting two data with line at a certain point

问题描述

我想要一个使用gnuplot和两个数据以混合方案的图.

I want a graph using gnuplot with two data in mixed scheme.

这是一个由3列组成的数据:

This is a data consisting of 3 columns:

x   y1   y2
1   0    1    
2   0    1    
3   0    1    
4   0    1    
5   0    1    
6   0    1    
7   0    1    
8   0    1    
9   0.1  1.2
10  0.1  1.23

我要的是画一条没有接缝的线. 例如

What I want is that one line draws without seam. e.g.

From x=1 to x=5, use y1 value, then from x=6 to x=10 use y2 value.

而且，所有点都用一条直线相连.

And, all the points are connected with one single line.

有没有人知道如何使用简单的gnuplot命令来制作它?

Does any body know how to make it with simple gnuplot command?

推荐答案

Prue Gnuplot解决方案:

Prue Gnuplot soulution:

plot 'sheme.dat' u 1:($1<=5?$2:$3) w l

如果需要，您可以优化条件以处理x< 1和x> 10 ...的情况.

If you want, you can refine the condition to handle cases x<1 and x>10...

OR

如果要绘制y1的线 1-5和y2绘制6-10，请使用零列:

If you want to plot lines 1-5 with y1 and 6-10 with y2, use column zero:

plot 'sheme.dat' u 1:($0<=4?$2:$3) w l

这篇关于gnuplot:在某个点用线连接两个数据的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！