Surface plot using surf() and mesh grid

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federico nutarelli 2021-8-20

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评论： federico nutarelli 2021-8-20

Hi all,

I have two vectors and a matrix that I would like to plot in 3D (as surfaces). I have seen that there is a command called surf() to do so. Now, my variables are two vectors, say k1 and k2 of length (1x741) and a matrix, say omega, of dimension (12x741). When I perform:

[X,Y]=meshgrid(k1,k2)

my new vectors X and Y, are, of course 741x741. My problem is: is there a way to transform the 12x741 matrix in, say, a matrix Z so that I can perform

surf(X,Y,Z)

without dimensionality errors?

Thank you

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Answer 1

KSSV 2021-8-20

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https://ww2.mathworks.cn/matlabcentral/answers/1437394-surface-plot-using-surf-and-mesh-grid#answer_771134

在 MATLAB Online 中打开

You can use interp2, imresize to resize your desired matrices into required dimensions.

Let Omega be your matrix of size 12*741.

Z = imresize(Omega,[741 741]) ;

Now you can use surf.

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federico nutarelli 2021-8-20

@KSSV thank you for your reply. However, I might have posed the question in the wrong way. In particular I would like 12 surfaces to appear. The matrix Omega is a 12x741 since it contains 12 curves. With imresize the surface plot is just one

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