Matrix initialisation

[Søren Hauberg]

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?

Søren