Element replacement of matrix.

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Usha Silwal 2019-9-11

回答： David K. 2019-9-11

How do I replace each element in third row of the 5*4 matrix with its corresponding column number using for loop?

David K. 2019-9-11

If using a for loop is not actually a requirement you can do this very simply as such:

myMatrix = rand(5,4); % create 5x4 matrix
myMatrix(3,:) = 1:4; % replace values

If the for loop is a requirement:

myMatrix = rand(5,4); % create 5x4 matrix
for n = 1:4
    myMatrix(3,n) = n;
end

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