sum of elements by row or column in a matrix in Sage

fagui
187 ●9 ●16 ●22

in Numpy, we can use sum(M,axis=0) or sum(M,axis=1)

what is the equivalent instruction syntax with sage ?

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For summing rows:

sage: M = random_matrix(ZZ,3,5)
sage: M
[ -2   1 -10  -1  -1]
[ -2   1  -1   1  -1]
[ -3   5  -2   1   2]

sage: sum(M)
(-7, 7, -13, 1, 0)

For the columns:

sage: sum(M.columns())
(-13, -2, 3)

sage: sum(M.T)
(-13, -2, 3)

thank you !!!

fagui ( 2016-06-26 13:34:40 +0100 )edit

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Asked: 2016-06-26 10:19:07 +0100

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Last updated: Jun 26 '16