Matlab的：我有一个3D图两点，我想他们用线连接 [英] Matlab: I have two points in a 3D plot and i want to connect them with a line

问题描述

我有一个3D图和两个点坐标A（0,0,0）和B（13，-11,19）。我只是想绘制可见的线连接这两个点......我想plot3（0,0,0，13，-11,19）和其他的东西，但一切我尝试彻底失败。

I have a 3D plot and two points coordinates A(0,0,0) and B(13,-11,19). I just want to plot a visible line connecting this two points ... I tried plot3(0,0,0, 13,-11,19) and other stuff but everything i tried failed miserably.

推荐答案

具体方法如下：

% Your two points
P1 = [0,0,0];
P2 = [13,-11,19];

% Their vertial concatenation is what you want
pts = [P1; P2];

% Because that's what line() wants to see    
line(pts(:,1), pts(:,2), pts(:,3))

% Alternatively, you could use plot3:
plot3(pts(:,1), pts(:,2), pts(:,3))

诚然，这似乎有点违反直觉在第一，但在长远来看，这将是有意义的。

Admittedly, this might seem a bit counter-intuitive at first, but in the long run it'll make sense.

如果你读 DOC情节或 DOC行，你会发现每一个希望的集 X ，是和以Z 资料>分别。也就是说，使用

If you read doc plot or doc line, you'll see that each expects sets of x, y and z data, respectively. That is, using

plot3(X,Y,Z)

与 X ，是和以Z 部分矩阵， plot3 将画一条线从第一的三重的（ X（1）Y（1）Z（1））的第二个三线（ X（2）Y（2）Z（2））等 - 同样为行。

with X, Y and Z some matrices, plot3 will draw a line from the first triplet (X(1) Y(1) Z(1)) to the second triplet (X(2) Y(2) Z(2)) and so on -- same for line.

这篇关于Matlab的：我有一个3D图两点，我想他们用线连接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！