recarray.compress(condition, axis=None, out=None) Return selected slices of this array along given axis. Refer

recarray.nonzero() Return the indices of the elements that are non-zero. Refer to

matrix.var(axis=None, dtype=None, out=None, ddof=0)

matrix.min(axis=None, out=None)

matrix.H Returns the (complex) conjugate transpose of self. Equivalent to np.transpose(self)

matrix.argsort(axis=-1, kind='quicksort', order=None) Returns the indices that would sort this array. Refer to

recarray.round(decimals=0, out=None) Return a with each element rounded to the given number of decimals.

matrix.clip(min=None, max=None, out=None) Return an array whose values are limited to [min, max]. One of max or

matrix.size Number of elements in the array. Equivalent to np.prod(a.shape), i.e., the product of the

recarray.nbytes Total bytes consumed by the elements of the array. Notes Does not include