RE: Octave 3.0

[Andy Adler]

On Wed, 26 Feb 2003, Schloegl Alois wrote:
>  * Sparse matrices:
> An important issue is the matrix multiplication of full and sparse matrices.
> See the following example:
>
> x = [-inf, -1, 0, 1, inf,nan];
> sx= sparse(x);
> full(x'*x)
> full(sx'*sx)
>
> The point is that under some circumstances (0*inf, 0*-inf, 0*nan), matrix
> multiplications of full and sparse matrices give different results.
> SPARSE can be used to control the desired behavior. Therefore, SPARSE is
> important and, currently, there is no workaround. IMHO, SPARSE has top
> priority.

Have you looked at the sparse matrix functions in octave-forge?
Are there any specific features lacking in that package?

Andy