larray.Array.cumprod¶

Array.cumprod(self, axis=-1)[source]¶

Returns the cumulative product of array elements.

Parameters:	axis : int or str or Axis, optional Axis along which to perform the cumulative product. If given as position, it can be a negative integer, in which case it counts from the last to the first axis. By default, the cumulative product is performed along the last axis.
Returns:	Array or scalar

See also

Array.cumsum, Array.sum, Array.sum_by
Array.prod, Array.prod_by

Notes

Cumulative aggregation functions accept only one axis.

Examples

>>> arr = ndtest((4, 4))
>>> arr
a\b  b0  b1  b2  b3
 a0   0   1   2   3
 a1   4   5   6   7
 a2   8   9  10  11
 a3  12  13  14  15
>>> arr.cumprod()
a\b  b0   b1    b2     b3
 a0   0    0     0      0
 a1   4   20   120    840
 a2   8   72   720   7920
 a3  12  156  2184  32760
>>> arr.cumprod('a')
a\b  b0   b1    b2    b3
 a0   0    1     2     3
 a1   0    5    12    21
 a2   0   45   120   231
 a3   0  585  1680  3465