Hello all,
Attached is code (plus tests) for allocating aligned arrays -- I think
this addresses all the requests in this thread, with regard to
allowing for different kinds of alignment. Thanks Robert and Anne for
your help and suggestions. Hopefully this will be useful.
The core is a
Robert,
Can we check this in somewhere under numpy.core? It seems very useful.
Stéfan
2008/4/25 Zachary Pincus [EMAIL PROTECTED]:
Hello all,
Attached is code (plus tests) for allocating aligned arrays -- I think this
addresses all the requests in this thread, with regard to allowing for
The problem with alignment on 3 byte boundaries, is that 3 is a prime and
not a factor of the size of any common data type. (The only exception I
can think of is 24 bit RGB values.) So in general, the elements in an
array for which the first element is aligned on a 3 byte boundary, may or
may not
Hello all,
I need to allocate a numpy array that I will then pass to a camera
driver (via ctypes) so that the driver can fill the array with pixels.
The catch is that the driver requires that rows of pixels start at 4-
byte boundaries.
The sample C++ code given for allocating memory for
On Wed, Apr 23, 2008 at 2:10 PM, Zachary Pincus [EMAIL PROTECTED] wrote:
Hello all,
I need to allocate a numpy array that I will then pass to a camera
driver (via ctypes) so that the driver can fill the array with pixels.
The catch is that the driver requires that rows of pixels start at
On 23/04/2008, Zachary Pincus [EMAIL PROTECTED] wrote:
Hi,
Thanks a ton for the advice, Robert! Taking an array slice (instead of
trying to set up the strides, etc. myself) is a slick way of getting
this result indeed.
It's worth mentioning that there was some discussion of adding an
