Mapping a smaller matrix to a larger matrix

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Aaron DeSantis
Aaron DeSantis 2023-2-23
评论： Aaron DeSantis 2023-2-23
I have a 4x4 matrix with indicies indicated around it (k). I want to map it to an 8x8 matrix based on thoes indicies to give me k'. See the image below for clarification. Is there a way to do it such that the indecies on the 4x4 matric and be any value from 1-8. For instance instead of 7812, use 4312 or 4378.
  2 个评论
Dyuman Joshi
Dyuman Joshi 2023-2-23
How are the indices given to you? Or how are these indices provided to the code as input?
Jan
Jan 2023-2-23
A smarter example than only 1
K = [1,2,3,4; 5,6,7,8; 9,10,11,12; 13,14,15,16];
index1 = [7,8,1,2];
index2 = [7,8,1,2];

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Cameron
Cameron 2023-2-23
编辑：Cameron 2023-2-23
k = ones(4);
kprime = zeros(8);
krow = [7 8 1 2];
kcol = [7; 8; 1; 2];
kprime(krow,kcol) = k;
Not sure where the k'(5,1) value came from or if you accidentally put a 1 there.

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