get the shape of a numpy ndarray in C++ code [boost.python]

[Marc Oldenhof]

[sorry is half a post appeared earlier. Bloody Google groups...]

Hello,

I'm trying to use a numpy array in C++ (win2000) using boost.python.

Test code:
void test( numeric::array& nsP)
{
   object shape = nsP.getshape();
   int rows = extract<int>(shape[0]);
   int cols = extract<int>(shape[1]);
}

At first, running it in Python got me this message:

   ArgumentError: Python argument types in
       d3d.wr_conn(numpy.ndarray)
   did not match C++ signature:
       wr_conn(class boost::python::numeric::array {lvalue})

I fixed this using this line:

   numeric::array::set_module_and_type( "numpy", "ndarray");

[was that right?]


At least it got me one step further; the array is accepted. Now the
message is this:

   AttributeError: 'numpy.ndarray' object has no attribute 'getshape'

Now I'm stumped. The only thing I can find is
   http://www.thescripts.com/forum/showthread.php?t=644270

which regrettably ends with the same question. What's wrong here?

greets,
Marc