[Numpy-discussion] How to concatenate two arrays without duplicating memory?
Wed Sep 2 10:11:35 CDT 2009
V. Armando Solé skrev:
> I am looking for a way to have a non contiguous array C in which the
> "left" (10000, 2000) elements point to A and the "right" (10000, 4000)
> elements point to B.
> Any hint will be appreciated.
If you know in advance that A and B are going to be duplicated, you can
C = np.zeros((10000, 6000))
A = C[:,:2000]
B = C[:,2000:]
Now C is A and B concatenated horizontally.
If you can't to this, you could write the data to a temporary file and
read it back, but it would be slow.
More information about the NumPy-Discussion