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Re: Numpy ndarray to C array

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On 12/8/11 7:56 PM, Enrico wrote:
> I am trying to pass a multi-dimensional ndarray to C as a multi-
> dimensional C array for the purposes of passing it to mathematica.
> They already have a wrapper for a 1-D Python list. where the list is
> copied to "list". Shown below:

> I would like to create a similar wrapper which accepts an ndarray and
> provides the array laid out in memory like a C array declared
> explicitly as "int a[m][n]...".  I also need to pass the length of the
> array at each level i as dim[i].  Since this is pretty much the only
> function I plan to wrap, I'd like to avoid using boost, swig, etc.

You will find it better to ask numpy questions on the numpy mailing list:

   http://www.scipy.org/Mailing_Lists

In this case, you are looking for the PyArray_AsCArray() function:

   http://docs.scipy.org/doc/numpy/reference/c-api.array.html#PyArray_AsCArray

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco

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Numpy ndarray to C array Enrico <enricong@gmail.com> - 2011-12-08 11:56 -0800
  Re: Numpy ndarray to C array Robert Kern <robert.kern@gmail.com> - 2011-12-08 21:31 +0000

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