Matrix Norm

anupamseth's picture
anupamseth
Sat, 02/02/2008 - 01:55
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Other usage issues

Hi,

I want to determine norm of a 3x3 matrix (L2 norm by default). I could not find any explicit function in OCC which can do this. I will be very thankful if someone can suggest a way of doing in OCC.

Thanks

Mikael Aronsson's picture
Mikael Aronsson
Sat, 02/02/2008 - 12:49

You can always do it yourself, you have access to all the elements so you can sum them up yourself.

anupamseth's picture
anupamseth
Mon, 02/04/2008 - 06:57

Hi,

Remember that matrix norm of matrix A is defined as:
||A|| = sqrt(maximum eigenvalue of A'A)
where, A' = conjugate transpose

So, we can't just simply sum them up. By summing, I think that you are referring to L1 norm or the norm of a vector. Here we have a matrix.

Thanks

Mikael Aronsson's picture
Mikael Aronsson
Mon, 02/04/2008 - 11:38

Ah, that's true, my mistake.