[SciPy-dev] PyArray_New problem
Travis Oliphant
oliphant.travis at ieee.org
Fri Dec 2 10:50:22 EST 2005
Robert Cimrman wrote:
>Could someone tell me what I am doing wrong? I would like to use a
>function like the snippet below to create an array.
>
>PyArrayObject *helper_newCArrayObject_i32( int32 len, int32 *array ) {
> intp plen[1];
> PyArrayObject *obj = 0;
>
> plen[0] = len;
> printf( "11111 %d\n", PyArray_INT32 );
>/* obj = (PyArrayObject *) PyArray_SimpleNew( 1, plen, PyArray_INT32 ); */
>
> obj = (PyArrayObject *) PyArray_New( &PyArray_Type, 1, plen,
>PyArray_INT32, NULL, NULL, 0, CARRAY_FLAGS, NULL );
>....
>
>
First of all, don't pass in CARRAY_FLAGS when the data argument to
PyArray_New is NULL. A non-zero flags entry tells the subroutine to
create a FORTRAN strides array if no data is passed.
Remember: DATA flags are only to describe already available memory.
If you create the memory in PyArray_New, then the only thing to decide
is FORTRAN or C- contiguous. So, in this routine, you are creating a
Fortran array. Perhaps this is causing problems later.
Also, you are not showing us the rest of the code. Your traceback is
showing PyArray_ValidType being called which is not shown anywere...
-Travis
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