How to zoom out / shrink the matrix to the desired matrix

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Yiqing Zhou 2018-3-10

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编辑： Stephen23 2018-3-12

Hi guys, I have a question. I have an 8 by 8 matrix for instance, and I tried to shrink it into 5 by 5 matrix. Does the Matlab have the way to do that? I try to extract the odd element in rows and columns but it cannot the exact size of the matrix I want. For example Y = I(1:2: end,1:2: end) and in 8 by 8 matrix case, it will only output the 4 by 4 matrix. Thank you

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Stephen23 2018-3-10

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编辑：Stephen23 2018-3-12

在 MATLAB Online 中打开

You can use interp2, e.g.:

M = your 8x8 matrix
V = linspace(1,8,5);
interp2(M,V,V.')

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Walter Roberson 2018-3-12

interp2(M, V, V.')

Yiqing Zhou 2018-3-12

It works, thank you, Roberson.

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