Maximizing along n-1 dimensions of an n-dimensional array without a for loop
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I have an n-dimensional array, VV, which I would like to maximize along all dimensions for each element in the first dimension. I would also like to obtain the associated linear indices so that I can evaluate related arrays at those locations. I have to do this a large amount of times, so I need to figure out a way to do this without a for loop.
Here is an example for an n=3 dimensional array, but with a loop:
VV=rand(10,10,10);
for ii=1:size(VV,1)
Vtemp = squeeze(VV(ii,:,:));
[V(ii) I(ii)] = max(Vtemp(:));
end
[~,ind] = ismember(V,VV);
Any help would be appreciated.
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Steven Lord
le 12 Oct 2021
VV=randi(1000, 5, 5, 5);
[values, locations] = max(VV, [], 1:ndims(VV)-1, 'linear');
check = [reshape(values, [], 1), reshape(VV(locations), [], 1)]
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