[Numpy-discussion] PyArray_DIMS problem

[Sebastian Haase]

Hi!

On 12/20/06, Gennan Chen <gnchen at mac.com> wrote:

>  Hi!
>
>
> I have problem with this function call under FC6 X86_64 for my own numpy
> extension
>
>
> printf("\n %d %d %d",
> PyArray_DIM(imgi,0),PyArray_DIM(imgi,1),PyArray_DIM(imgi,2))
>
>
> it gave me
>
>
> 166 256 256
>
>
> if I tried:
>
>
> int *dim;
> dim = PyArray_DIMS(imgi)
> printf("\n %d %d %d", dim[0], dim[1], dim[2]);
>
>
> it gave me 166 0 256
>

Hi - maybe I'm dense here - but how is this /supposed/ to work ? Is
PyArray_DIMS
allocating some memory that never gets freed !?  I thought "tuples" in C had
to always be passed into a function, so that that function could modify it,
as in:
const int maxNDim = 20;
int dim[maxNDim];
PyArray_DIMS(imgi,  dim);

--- What am I missing ... ?
-Sebastian
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