numpy.ma.ptp()
numpy.ma.ptp
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numpy.ma.ptp(obj, axis=None, out=None, fill_value=None)[source] -
Return (maximum - minimum) along the the given dimension (i.e. peak-to-peak value).
Parameters: axis : {None, int}, optional
Axis along which to find the peaks. If None (default) the flattened array is used.
out : {None, array_like}, optional
Alternative output array in which to place the result. It must have the same shape and buffer length as the expected o