How to find the product of each element of a matrix by itself and by the other elemets at the same row?
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Matt Talebi
on 27 Mar 2015
Commented: Andrei Bobrov
on 31 Mar 2015
input:
x = [a,b,c;
d,e,f]
output:
y = [a^2,a*b,a*c,b^2,b*c,c^2;
d^2,d*e,d*f,e^2,e*f,f^2]
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Accepted Answer
Andrei Bobrov
on 27 Mar 2015
Edited: Andrei Bobrov
on 31 Mar 2015
EDIT
[n1,n2] = ndgrid(1:size(x));
y = x(:,nonzeros(tril(n1))).*x(:,nonzeros(tril(n2)));
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