Re: [ublas] different size for matrix addition

Subject: Re: [ublas] different size for matrix addition
From: Kraus Philipp (philipp.kraus_at_[hidden])
Date: 2010-06-16 03:43:11

Hi David, thanks for the fast answer.

Am 16.06.2010 um 09:34 schrieb David Bellot:

> better to give the same size to x and y, filling x with extra zeros.

I can't do this, because I need a "grow up" for my matrix. I have a  
symmetric matrix with NxN
elements and in a next step the matrix must grow up to (N+1)x(N+1)

> here z takes the size of y but is filled with wrong indices due to x  
> having a smaller size.
>
> By the way, I have never been so confortable with the idea of  
> assuming zeros when adding 2 matrices of different sizes :-)

That's only a test and my elements of x and y aren't be zero in reality