Wonderful, it works, thanks!
Michele
--- Discussion of Numerical Python
<numpy-discussion@lists.sourceforge.net wrote:
On 10/12/06, Michele Vallisneri
<[EMAIL PROTECTED]> wrote:
> > Does anybody here have experience about offering
the array interface
> > from a SWIG-wrapped C struct?
>
> I have.
>
> > I have tried the following, borrowing code from numpy's arrayobject.c:
> >
> > %extend real_vec_t {
> > PyObject *__array_struct__() {
> >
/* From numpy/arrayobject.c/array_struct_get */
>
> You are extending
real_vec_t with a new METHOD, but what numpy
> requests is an ATTRIBUTE.
So, numpy simply queries your vec like:
>
> arrstr = vec.__array_struct__
>
> and not with a method call like this
>
> arrstr = vec.__array_struct__()
>
>
> So here is what I would do (can fail with some SWIG optimizations)
>
> %extend Vec {
>
> PyObject* __array_struct__ () { /* ... */ }
>
> %pythoncode {
> __array_struct__ = property(__array_struct__,
> doc='Array protocol')
> }
>
> }
>
> Hope you got the idea.
>
> --
> Lisandro Dalc�n
> ---------------
> Centro Internacional de M�todos Computacionales en
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>
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