Re: [Pkg-octave-devel] Bug#394982: octave2.9: Crashes on "x(:,

[Kim Hansen]

On 10/26/06, David Bateman <address@hidden> wrote:
> Note that this is still a very bad idea as it reallocates the memory to
> the sparse matrix and every assignment, even if you size the initial
> matrix correctly. This is due to the fact that only enough space for the
> nonzeros is ever created... I'd therefore highly recommended forming
> vectors of row, col and value and use the sparse function instead. This
> is discussed in the sparse section of the manual....

I have just read that section now, it is really a good section. I can
see that some of my functions should be rewritten to the row,col,value
style.

If I append data at the end of a sparse matrix it should be possible
to extend it without the reallocation, but I can see that is not how
it works right now. Is that something I could change octave to support
or is it a limitation from some libraries it would be difficult to
work around?

--
Kim Hansen
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