surfnorm function shows error

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Sara
Sara on 15 Nov 2020
Commented: Ameer Hamza on 15 Nov 2020
Hi,
I am trying to use surfnorm function to calculate the nor of 3D meshgrid. But the use of the functions shows error "Y and Z must be the same size as X." which I do not understand why!!
The size of X,Y,Z are the same even though the document in mathwork says it is possible to use meshgrid as an input as attached in the questions
x = linspace(-1,1,10);
y = x;
z = x;
[X,Y,Z]=meshgrid(x,y,z);
figure,
surfnorm(X,Y,Z);

Accepted Answer

Ameer Hamza
Ameer Hamza on 15 Nov 2020
Edited: Ameer Hamza on 15 Nov 2020
X, Y, and Z must be 2D matrices. Z is a function of X and Y in this case. The following shows an example of how to use it properly
x = linspace(-1,1,10);
y = x;
[X,Y]=meshgrid(x,y);
Z = X+Y; % Z=X+Y is chosen as an example to show Z is a function of X and Y
figure,
surfnorm(X,Y,Z);
  2 Comments
Sara
Sara on 15 Nov 2020
Thank you for your respnd,
I now understand the error,
Thank you.
Ameer Hamza
Ameer Hamza on 15 Nov 2020
I am glad to be of help!!!

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