Subscripted assignment dimension mismatch
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I am receiving this error in my code and I cannot figure out why. Any suggestions would be greatly appreciated.
[M,N,K] = size(X);
for j=1:K,
mu(j) = mean(X(:,:,j));
X(:,:,j) = X(:,:,j) - mu(j);
end
This goal is simply to take the mean of the third component and subtract it out from itself. There's a lot more going on in the code but this point is giving me the trouble.
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Geoff Hayes
2016-5-19
Benjamin - put a breakpoint at the line
mu(j) = mean(X(:,:,j));
and run your code. When the debugger pauses at this line, check to see what is
mean(X(:,:,j))
Is it a scalar or a 1xN array which has the mean of each column? What are you expecting it to be?
I suspect, given your statement, that you are assuming that it is a scalar that you can then subtract out from every other element, but that isn't the case. If this is true, then what you can do is either
mu(j) = mean(mean(X(:,:,j)));
or
T = X(:,:,j);
mu(j) = mean(T(:));
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