Double AA Double AA -4 years ago 96
Python Question

Remove one column for a numpy array

I have a numpy array of dimension (48, 366, 3) and I want to remove the last column from the array to make it (48, 365, 3). What is the best way to do that? (All the entries are integers. I'm using Python v2.6)

Answer Source

You could try numpy.delete:

http://docs.scipy.org/doc/numpy/reference/generated/numpy.delete.html

or just get the slice of the array you want and write it to a new array.

For example:

a = np.random.randint(0,2, size=(48,366,3))
b = np.delete(a, np.s_[-1:], axis=1)
print b.shape # <--- (48,365,3)

or equivalently:

b = np.delete(a, -1, axis=1)

or:

b = a[:,:-1,:]
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