So, for both 1.5 and 1.6 (at least), it appears that the builtin sum
does not add ndarrays the way "+" (and operator.add) do:
a = np.arange(10).reshape((2,5))
b = np.arange(10, 20).reshape((2,5))
sum(a,b)
Out[5]:
array([[15, 18, 21, 24, 27],
[20, 23, 26, 29, 32]])
a + b
Out[6]:
array([[10,
Dear all-
Structured arrays are great, but I am having problems filtering them
efficiently. Reading through the mailing list, it seems like boolean
arrays are the recommended approach to filtering arrays for arbitrary
conditions, but my testing shows that a combination of take and where
can be muc
