Re: [Numpy-discussion] numpy, swig and TNT-Arrays

Charles R Harris wrote:

On Tue, Nov 11, 2008 at 1:24 AM, Rolf Wester wrote:

...

Hi all,

I would like to wrap some C++ classes that use TNT-Arrays. Is it possible to pass numpy arrays to C++ functions that expect TNT-Arrays as function parameter? Does anybody know how the wrappers could be generated using swig? I would be very appreciative for any help.

With kind regards

IIRC, TNT does vectors and matrices, they have constructors, and they are contiguous. I think you can make wrappers, but it isn't going to be anything straight forward unless you can reuse the memory from a numpy array and I don't recall that that sort of constructor is available.

Is TNT still active? It looked pretty dead last time I looked several years ago.

Chuck

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TNT has constructors like: TNT::Array1D<double>(int n, double * data) which do not allocate a new C-array but that use "data" as their data-array. I'm not sure whether TNT is still actively maintained, the TNT home page was last modified in 2004, so you are probably right. But the TNT Arrays are just what I need and I know of no alternative. Rolf -- ------------------------------------ # Dr. Rolf Wester # Fraunhofer Institut f. Lasertechnik # Steinbachstrasse 15, D-52074 Aachen, Germany. # Tel: + 49 (0) 241 8906 401, Fax: +49 (0) 241 8906 121 # EMail: rolf.wester@ilt.fraunhofer.de # WWW: http://www.ilt.fraunhofer.de