On 22/08/12 11:13, alfa wrote: > Hi John, > > Thanks a lot for your implementation. In multi_array_to_numpy.h, can > you give more hints on which method/function that I can possibly use if > I can include it in my implementation as a header file. > > Thanks in advance. > src/python/man_module.cpp and src/python/multi_array_to_numpy.cpp implement a boost.python module that exposes the multi-array classes. You have choose which data types you expose multiarrays for.
HTH, John. > > ------------------------------------------------------------------------ > *From:* John Reid <j.r...@mail.cryst.bbk.ac.uk> > *To:* cplusplus-sig@python.org > *Sent:* Thursday, August 16, 2012 5:02 PM > *Subject:* Re: [C++-sig] Accessing 2D array from python in C++ > > If you don't mind digging around in my code, you could download the > source code for the STEME python package from pypi and look in the > c++/myrrh directory. There is code to access multi_arrays from python in > there. > > http://pypi.python.org/pypi/STEME/ > > In particular the file > c++/myrrh/myrrh/python/multi_array_to_numpy.h contains the bulk of the > implementation. > > HTH, > John. > > > > On 16/08/12 09:29, alfa wrote: >> Hi, >> >> Could you give more hints on this or any code snippet that I can >> implement this. I'm a bit naive in applying this. Please consider my 2D >> array of Vp_cpp(Vp equivalent in Python) is as below: >> >> typedef boost::multi_array<double, 2> array_type; >> typedef array_type::index index; >> array_type Vp_cpp(boost::extents[X_cpp][X_cpp]); >> >> >> I'm still puzzled how to "manually wrap the features" in the last > "..." in: >> boost::python::class_< boost::multi_array<...> >(...) >> >> Thanks in advance. >> >> ------------------------------------------------------------------------ >> *From:* Jim Bosch <tallji...@gmail.com <mailto:tallji...@gmail.com>> >> *To:* alfa <alfarobi0...@yahoo.com <mailto:alfarobi0...@yahoo.com>> >> *Cc:* Development of Python/C++ integration <cplusplus-sig@python.org > <mailto:cplusplus-sig@python.org>> >> *Sent:* Wednesday, August 15, 2012 5:34 PM >> *Subject:* Re: [C++-sig] Accessing 2D array from python in C++ >> >> On Aug 15, 2012 1:57 AM, "alfa" <alfarobi0...@yahoo.com > <mailto:alfarobi0...@yahoo.com> >> <mailto:alfarobi0...@yahoo.com <mailto:alfarobi0...@yahoo.com>>> wrote: >>> >>> I apologize for double posting this because it was spammed before. >>> >>> Hi Jim, >>> >>> Do you mean, "you could wrap multi_array itself using class_", I >> should do as below: >>> >>> boost::python::class_<std::vector<std::vector<double> > >>>("PyVec").def(boost::python::vector_indexing_suite<std::vector<std::vector<double> >>> >()); >>> >> No, I don't think that will work; I meant something like this: >> boost::python::class_< boost::multi_array<...> >(...) >> ...; >> Where the last "..." is where you have to manually wrap the features of >> multi_array you want to use. I'm afraid there's nothing as easy as >> vector_indexing_suite. >> Jim >> >> >> >> >> _______________________________________________ >> Cplusplus-sig mailing list >> Cplusplus-sig@python.org <mailto:Cplusplus-sig@python.org> >> http://mail.python.org/mailman/listinfo/cplusplus-sig >> > > _______________________________________________ > Cplusplus-sig mailing list > Cplusplus-sig@python.org <mailto:Cplusplus-sig@python.org> > http://mail.python.org/mailman/listinfo/cplusplus-sig > > > > > _______________________________________________ > Cplusplus-sig mailing list > Cplusplus-sig@python.org > http://mail.python.org/mailman/listinfo/cplusplus-sig > _______________________________________________ Cplusplus-sig mailing list Cplusplus-sig@python.org http://mail.python.org/mailman/listinfo/cplusplus-sig
