How to subtract from a vector a three dimentional matrix
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Hi everyone,
I have a 1x12 vector and a 3x2x12 matrix, say i x j x t. I want to subtract for each i and for each j the corresponding vector of t. I've tried the following, but it doesn't work.
for t=1:12
for j=1:2; %size(inputs,1);
for i=1:3 %10;
MSFE_i(i,:,j)=mean((y(1:12)'-forecasts_test(i,j,:)).^2);
end
end
end;
any ideas of what i am missing here? Thanks in advance.
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Accepted Answer
Adam
on 12 Dec 2016
Edited: Adam
on 12 Dec 2016
for example:
a = ones( 3, 2, 12 );
v = linspace( 0, 1, 12 );
res = reshape( bsxfun( @minus, reshape( a, [], 12 ), v ), [3, 2, 12] );
Obviously you can generalise the hard coded numbers and you don't need all the linspace stuff - I just used that to create a vector for me to subtract and then check the results quickly.
2 Comments
Adam
on 12 Dec 2016
My v above is 1x12 which is the same as what you said your vector was so you just use your vector instead of my linspace-created vector.
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