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Matrix filling methods? [message #2691]

Thu, 18 August 1994 06:32

nicholas
Messages: 22
Registered: January 1994

Junior Member

I'm trying to speed up some code and hence I am trying
to get rid of some FOR loops. I need to fill a 2-d square
matrix. The values above the diagonal are given by one
formula while those values below the diagonal are given
by another. this is how i currently fill the matrix:

for i=0,n-1 do begin
Matrix(i:*,i-1) = x(i-1)/x(k:*)
Matrix(i-1,i:*) = y(k:*)/y(k-1)
endfor
diag=findgen(n)
Matrix(diag,diag)=z(diag)

Does anyone know of a way to speed this up? Maybe a where to find the
matrix elements above the diagonal and one for below?
Any help is greatly appreciated,
Thanks,
Andy
nicholas.uap.nrl.navy.mil

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By: nicholas on Thu, 18 August 1994 06:32

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