Plot a single vector as a line

120 次查看（过去 30 天）
Anthony Mason
Anthony Mason 2019-6-26
评论： infinity 2019-6-26
How would you plot a 3 dimensional vector as a single line? I need to plot the null space of a matrix and having trouble finding the correct way to create the graph. Matrix is : [1,3,11;4,2,14;-2,-2,-10] , and the Null space is the vector [-2;-3;1]. It should just be a line because I am also plotting the column space of the matrix which is a plane. Any help would be greatly appreciated.
  3 个评论
显示 1更早的评论
Anthony Mason
Anthony Mason 2019-6-26
I meant that the graph was the Null space of the matrix. That is the vector when I set the free variable x3 to 1. It can be set to 0, 2, 3 , etc. Sorry for not specifying. I was saying that this graph should be a line because when graphing the column space of the matrix it should be a plane because it covers the span of all linear combinations of Ax = b. Is this not correct? I thought that column space was a plane when graphed and null space was a line.
infinity
infinity 2019-6-26
Hello,
Here you can see an example in 2D, the column space and null space are draw.
https://www.geogebra.org/m/ZhSFHDaa
I think in your case (3D), you can plot as a answer below.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Vismay Raj
Vismay Raj 2019-6-26
assuming that you want to draw a vector starting from (0,0,0) and to the specified point the following code can be used
v = [-2;-3;-1] % or any vector that you've obtained
t = linspace(0,1,100)
e = v*t
plot3(e(:,1),e(:,2),e(:,3))
see plot3 function for more https://www.mathworks.com/help/matlab/ref/plot3.html

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 2-D and 3-D Plots 的更多信息

标签

产品


版本

R2018b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by