Transforming vector into triangular matrix
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Hi guys,
I've got a 48x1 vector say [x1; x2; x3; x4;...x48]
I want to transform this into a 48x48 matrix that looks like:
x1 0 0 0 ...
x1 x2 0 0 ...
x1 x2 x3 0 ...
x1 x2 x3 x4 ...
....
What are some of the ways to do this? I know I could use diag() but that would only get me 1 diagonal line. Or should I try and use tril()? Thanks!
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