MaskedArray.argmax(axis=None, fill_value=None, out=None)

numpy.ma.masked_invalid(a, copy=True)

numpy.ma.dstack(tup) = Stack arrays in sequence depth wise (along third axis). Takes a sequence of arrays and stack them

numpy.ma.notmasked_edges(a, axis=None)

numpy.ma.conjugate(x[, out]) = Return the complex conjugate, element-wise. The complex conjugate of a complex number

numpy.ma.column_stack(tup) = Stack 1-D arrays as columns into a 2-D array. Take a sequence of 1-D arrays and stack

MaskedArray.count(axis=None)

numpy.ma.sum(self, axis=None, dtype=None, out=None) = Return the sum of the array elements over the given axis. Masked elements are

numpy.ma.concatenate(arrays, axis=0)

MaskedArray.clip(min=None, max=None, out=None)