[Numpy-discussion] swig numpy2carray converters
wfspotz at sandia.gov
Thu Nov 29 23:16:42 EST 2007
I have just committed the latest version of numpy.i (a swig interface
file for bridging between C arrays and numerical python) to the numpy
svn repository. There are three relatively new features that are now
* It is now possible to wrap functions that expect integer arguments
and have swig
generate wrappers that allow you to provide numpy array scalars.
* A new ARGOUTVIEW suite of typemaps is provided that allows your
to provide a pointer to internal data and that returns a numpy
it. This is potentially dangerous, but necessary in some
situations for very
large data buffers.
* New typemaps are provided that correctly handle FORTRAN ordered 2D
and 3D arrays.
Tests for the ARGOUTVIEW and FORTRAN ordered arrays have also been
added, and the documentation (doc/numpy_swig.*) has been updated to
reflect all of these changes.
On Nov 26, 2007, at 3:52 PM, Christopher Barker wrote:
> Bill Spotz wrote:
>> First, my plan is to add to numpy.i, typemaps for signatures like the
>> %typemap(argout) (double** ARGOUT_ARRAY1, int* DIM1)
>> It is important to note that even though the same argument *names*
>> are used, this is a different typemap signature than
>> %typemap(argout) (double* ARGOUT_ARRAY1, int DIM1)
>> and thus can have (logically) different implementations.
> maybe it's a good idea to give the arguments different names, though,
> just for clarity.
>> As for having a COPY version of the first typemap signature (in
>> addition to the non-copy, or "view" version), I currently do not plan
>> to do this.
> I think you've got it right.
> Thanks for all this!
> Christopher Barker, Ph.D.
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** Bill Spotz **
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