numpy.ma.append — NumPy v1.13 Manual (original) (raw)
numpy.ma. append(a, b, axis=None)[source]¶
Append values to the end of an array.
New in version 1.9.0.
| Parameters: | a : array_like Values are appended to a copy of this array. b : array_like These values are appended to a copy of a. It must be of the correct shape (the same shape as a, excluding axis). If _axis_is not specified, b can be any shape and will be flattened before use. axis : int, optional The axis along which v are appended. If axis is not given, both a and b are flattened before use. |
|---|---|
| Returns: | append : MaskedArray A copy of a with b appended to axis. Note that appenddoes not occur in-place: a new array is allocated and filled. If_axis_ is None, the result is a flattened array. |
See also
Equivalent function in the top-level NumPy module.
Examples
import numpy.ma as ma a = ma.masked_values([1, 2, 3], 2) b = ma.masked_values([[4, 5, 6], [7, 8, 9]], 7) print(ma.append(a, b)) [1 -- 3 4 5 6 -- 8 9]