[Numpy-discussion] Matlab/Numpy index order
David Warde-Farley
dwf at cs.toronto.edu
Tue May 12 16:14:48 EDT 2009
On 12-May-09, at 3:55 PM, Ryan May wrote:
>
> It's going to be faster to do it without the transpose. Besides,
> for numpy,
> that imshow becomes:
>
> imshow(b[0])
>
> Which, IMHO, looks better than Matlab.
You're right, that is better, odd how I never thought of doing it like
that. I've been stuck in my Matlab-esque world with dstack() as my
default mental model of how images/matrices ought to be stacked.
Am I right in thinking that b[0] is stored in a big contiguous block
of memory, thus making the read marginally faster than slicing on the
third?
David
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