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

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

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

matrix.setflags(write=None, align=None, uic=None) Set array flags WRITEABLE, ALIGNED, and UPDATEIFCOPY, respectively.

recarray.flatten(order='C') Return a copy of the array collapsed into one dimension.

matrix.swapaxes(axis1, axis2) Return a view of the array with axis1 and axis2 interchanged.