[Numpy-discussion] shape, size
Daniel Holth
dholth at fastmail.fm
Fri Jan 30 13:23:06 EST 2004
In python, if na is a numarray:
>>> na
array([[0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0],
[1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1]])
I can type
>>> nb = na[:,:4]
>>> nb
array([[0, 1, 0, 1],
[1, 0, 1, 0]])
>>> nb[0][0]=17
>>> na
array([[17, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0],
[ 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1]])
nb and na share data.
How do you write nb = na[:,:4] in a C extension module?
Thanks,
Daniel Holth
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