Numeric Python and C

[Ognen Duzlevski]

Hi,
can someone explain how to change a value within an array from a C function?

For example, I have the following array:

scoremat = zeros((10,10))

and the following C function:

PyObject *DynAlign(PyObject *self, PyObject *args)
{	
	PyArrayObject *p;
	int ok;

	/* get the array */
	ok = PyArg_ParseTuple(args,"O!", &PyArray_Type, &p);
	/* this gets a value p[5][5] */
	v55 = *(double *)p->data + 5*p->strides[0] + 5*p->strides[1]);
}

How to I change the value at p[5][5] and retain it in the same array after function exit?

So, from Python I might have:

from Numeric import *

scoremat = zeros((10,10))
DynAlign(scoremat)
print scoremat[5][5]

Thank you,
Ognen