numpy.ma.asanyarray#

ma.asanyarray(a, dtype=None, order=None)[原始碼]#

Convert the input to a masked array, conserving subclasses.

If a is a subclass of MaskedArray, its class is conserved. No copy is performed if the input is already an ndarray.

Parameters:

aarray_like: Input data, in any form that can be converted to an array.
dtypedtype, optional: By default, the data-type is inferred from the input data.
order{『C』, 『F』, 『A』, 『K』}, optional: Memory layout. 『A』 and 『K』 depend on the order of input array a. 『C』 row-major (C-style), 『F』 column-major (Fortran-style) memory representation. 『A』 (any) means 『F』 if a is Fortran contiguous, 『C』 otherwise 『K』 (keep) preserve input order Defaults to 『K』.

Returns:

outMaskedArray: MaskedArray interpretation of a.

也參考

asarray: Similar to asanyarray, but does not conserve subclass.

Examples

>>> import numpy as np
>>> x = np.arange(10.).reshape(2, 5)
>>> x
array([[0., 1., 2., 3., 4.],
       [5., 6., 7., 8., 9.]])
>>> np.ma.asanyarray(x)
masked_array(
  data=[[0., 1., 2., 3., 4.],
        [5., 6., 7., 8., 9.]],
  mask=False,
  fill_value=1e+20)
>>> type(np.ma.asanyarray(x))
<class 'numpy.ma.MaskedArray'>