Source code for obspy.signal.detrend
#!/usr/bin/env python
"""
Python module containing detrend methods.
:copyright:
The ObsPy Development Team (devs@obspy.org)
:license:
GNU Lesser General Public License, Version 3
(http://www.gnu.org/copyleft/lesser.html)
"""
import numpy as np
[docs]def simple(data):
"""
Detrend signal simply by subtracting a line through the first and last
point of the trace
:param data: Data to detrend, type numpy.ndarray.
:return: Detrended data.
"""
ndat = len(data)
x1, x2 = data[0], data[-1]
return data - (x1 + np.arange(ndat) * (x2 - x1) / float(ndat - 1))
if __name__ == '__main__':
import doctest
doctest.testmod(exclude_empty=True)