How to plot a 3D plot from three linear vectors?

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Sadiq Akbar
Sadiq Akbar 2022-2-21
评论： Matt J 2022-2-21
I have three vectors x ,y and z. The size of all of them are same.But all of them are 1D arrays. I want to draw a 3D plot from them. Let me give it in code form as below:
x=linspace(0,180,100);% 1st vector
y=x;% 2nd vector
z=rand(1,100)*1e-7;% 3rd vector
I tried to convert both x and y to 2D vectors as below:
[x,y]=meshgrid(x,y);
But when I use the surface command or mesh command, it gives me error as:
Z must be a matrix, not a scalar or vector.
What to do?

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Matt J
Matt J 2022-2-21
编辑：Matt J 2022-2-21
Ran in:
x=linspace(0,180,100);% 1st vector
y=x;% 2nd vector
z=rand(1,100)*1e-7;% 3rd vector
line(x,y,z); view(3)
  2 个评论
Sadiq Akbar
Sadiq Akbar 2022-2-21
Thank you very much dear Matt J. The 2nd problem is a little bit different from above. This time both x and y vectors are of same length but I want to plot peaks on intersection of the points of x and y axes i.e., I want to draw one peak on each i.e.,
(x1,y1)=(50,50)
(x2,y2)=(70,120)
(x3,y3)=(30,65)
Matt J
Matt J 2022-2-21
The 2nd problem is a little bit different from above.
If your first problem has been solved, please Accept-click the answer. If you have a new problem, please post it in a separate thread.

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