Re: Matrix initialisation

[Jaroslav Hajek]

On Mon, Dec 27, 2010 at 4:53 PM, Søren Hauberg <address@hidden> wrote:
> Hi
>
> I just got a bug report for the image package, where the fix boiled down
> to changing (in C++)
>
>  Matrix J (bins_length, thetas_length);
>
> to
>
>  Matrix J (bins_length, thetas_length, 0.0);
>
> i.e. initialise the matrix to contain zeros. I always thought that if
> you did not provide an initial value when constructing a matrix, it
> would default to zero. Has this ever been the case or is it just
> something I made up?
>

The latter, probably. As far as I remember, you always get an
uninitialized array using the first form.