obspy.core.stream.Stream.std

Stream.std()[source]

Calculate standard deviations of all Traces in the Stream.

Standard deviations are calculated by NumPy method std() on trace.data for every trace in the stream.

Returns:

List of standard deviations of all traces.

Example

>>> from obspy import Trace, Stream
>>> tr1 = Trace(data=np.array([0, -3, 9, 6, 4]))
>>> tr2 = Trace(data=np.array([0.3, -3.5, 9.0, 6.4, 4.3]))
>>> st = Stream(traces=[tr1, tr2])
>>> st.std()
[4.2614551505325036, 4.4348618918744247]