Name
accumulate
Synopsis
u.accumulate(a,axis=0)Returns an array r with the same shape and
type code as a. Each element of
r is the accumulation of elements of
a along the given
axis with the function or operator
underlying u. For example:
print add.accumulate(range(10)) # prints: [0 1 3 6 10 15 21 28 36 45]
Since add’s underlying operator
is +, and a is sequence
0,1,2,...,9, r is
0,0+1,0+1+2,...,0+1+...+8+9. In other words,
r
[0] is
a
[0],
r
[1] is
r
[0]
+
a
[1],
r
[2] is
r
[1]
+
a
[2], and so on (i.e.,
each
r
[
i
]
is
r
[
i
-1]
+
a
[
i
]).
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