如何使用绘图在gnuplot中绘制不同的线段 [英] How to draw distinct line segments in gnuplot using splot

问题描述

给我的印象是，在点之间引入空线会创建不连续的图.

I was under the impression that introducing an empty line between points creates disconnected plots.

如果文件Box.dat包含以下内容，则我希望恰好出现两个断开连接的线段.但是我在z平面上得到一个正方形.如何使gnuplot仅连接 未用换行符分隔的点?对于以下文件，我希望gnuplot生成2个线段:

If file Box.dat contains the following, I expect exactly two disconnected line segments to occur. However I get a square in the z plane. How do I get gnuplot to connect only the points not separated by a newline? For the following file I want gnuplot to generate 2 line segments:

Box.dat--------------------------
# Bounding box vertices
0 0 0 
1 0 0

0 0 1  
1 0 1
---------------------------------
 gnuplot> splot 'Box.dat'  using 1:2:3 with linespoints

推荐答案

在2D中(使用plot)，确实是，空行导致断开的线部分，请参见例如

In 2D (using plot) it is true, that an empty line leads to disconnected line parts, see e.g.

set autoscale fix
set offset 0.5,0.5,0.5,0.5
plot 'Box.dat' using 1:3 w l

在3D中(使用splot)，换行符分隔曲面的两条线.然后将相邻线的相同点连接起来以形成一个表面.为了获得3D中断开的线段，您必须使用两个换行符:

In 3D (with splot) a newline separates two lines of a surface. The same points of neighboring lines are then connected to form a surface. In order to get disconnected line segments in 3D you must use two newlines:

# Box.dat
0 0 0 
1 0 0


0 0 1  
1 0 1

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