Jens Rantil wrote:
> Hi all,
>
> So I have a C-function in a DLL loaded through ctypes. This particular
> function returns a pointer to a double. In fact I know that this
> pointer points to the first element in an array of, say for simplicity,
> 200 elements.
>
> How do I convert this pointer to a NumPy array that uses this data (ie.
> no copy of data in memory)? I am able to create a numpy array using a
> copy of the data.
>
def fromaddress(address, nbytes, dtype=double):
class Dummy(object): pass
d = Dummy()
d.__array_interface__ = {
'data' : (address, False),
'typestr' : numpy.uint8.str,
'descr' : numpy.uint8.descr,
'shape' : (nbytes,),
'strides' : None,
'version' : 3
}
return numpy.asarray(d).view( dtype=dtype )
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