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Error using mesh (line 71) Z must be a matrix, not a scalar or vector.

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FARHA KHAN
FARHA KHAN 2022-12-15
评论： FARHA KHAN 2022-12-19
I am trying to get mesh plot
a=eletxt(:,1);
b=eletxt(:,2);
c=ele(:,5);
a1=table2array(theta(1:5:end,:));
b1=table2array(phi(1:5:end,:));
c1=table2array(phase(1:5:end,:));
u=mesh( theta1,phi1,phase1)
I am getting error saying
Error using mesh (line 71)
Z must be a matrix, not a scalar or vector.
Error in Untitled_phase (line 10)
u=mesh( theta1,phi1,phase1)
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FARHA KHAN
FARHA KHAN 2022-12-15
Oh sorry I have edited that line I think it's not copied properly It's not theta1 phi1 and phase 1 It's a1,b1,c1

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回答（1 个）

Harshit Saini
Harshit Saini 2022-12-19
As stated in the error, the “mesh” function takes in an input as a matrix. Mesh considers the row and column indices as the x-coordinate and the y-coordinate for the plot.
From the provided code snippet, it seems the parameters inside the “mesh” function are vectors, and not a matrix. I would suggest reshaping the variable accordingly using the following function,
A = 1:10;
B = reshape(A, [5,2])
You can read more about reshaping the arrays here,
https://in.mathworks.com/help/matlab/math/reshaping-and-rearranging-arrays.html

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