numpy.ma.flatnotmasked_edges(a)
[source]
Find the indices of the first and last unmasked values.
Expects a 1-D MaskedArray
, returns None if all values are masked.
Parameters: |
a : array_like Input 1-D |
---|---|
Returns: |
edges : ndarray or None The indices of first and last non-masked value in the array. Returns None if all values are masked. |
See also
flatnotmasked_contiguous
, notmasked_contiguous
, notmasked_edges
, clump_masked
, clump_unmasked
Only accepts 1-D arrays.
>>> a = np.ma.arange(10) >>> flatnotmasked_edges(a) [0,-1]
>>> mask = (a < 3) | (a > 8) | (a == 5) >>> a[mask] = np.ma.masked >>> np.array(a[~a.mask]) array([3, 4, 6, 7, 8])
>>> flatnotmasked_edges(a) array([3, 8])
>>> a[:] = np.ma.masked >>> print(flatnotmasked_edges(ma)) None
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https://docs.scipy.org/doc/numpy-1.12.0/reference/generated/numpy.ma.flatnotmasked_edges.html