Re: NDArray version of dicrete laplace operator

[Michael Goffioul]

On 7/17/07, David Bateman <address@hidden> wrote:
> I have made an NDArray version of the discrete laplace operator "del2",
> and have attached it here. As this is a matlab core function. I wanted
> to propose this for inclusion in Octave. However, although I can get the
> same behavior as the 2D version in octave-forge, the edge points of the
> operator differ from the matlab version. It appears that the matlab
> version of "del2" calculates the interior points first and then
> extrapolates the edge points from this calculation, whereas the
> octave-forge version of del2 uses a nearest value approximation.
>
> Should I keep the octave-forge behavior or try and duplicate the Matlab
> behavior of del2?

Just a small note about the help text of the function: the non-TeX example
uses twice derivative along x (instead of x and y).

Michael.