obspy.signal.cross_correlation¶
Signal processing routines based on cross correlation techniques.
copyright: | The ObsPy Development Team (devs@obspy.org) |
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license: | GNU Lesser General Public License, Version 3 (https://www.gnu.org/copyleft/lesser.html) |
Public Functions
correlate |
Cross-correlation of signals a and b with specified maximal shift. |
templates_max_similarity |
Compares all event templates in the streams_templates list of streams against the given stream around the time of the suspected event. |
xcorr |
Cross correlation of tr1 and tr2 in the time domain using window_len. |
xcorr_3c |
Calculates the cross correlation on each of the specified components separately, stacks them together and estimates the maximum and shift of maximum on the stack. |
xcorr_max |
Return shift and value of the maximum of the cross-correlation function. |
xcorr_pick_correction |
Calculate the correction for the differential pick time determined by cross correlation of the waveforms in narrow windows around the pick times. |
Private Functions
Warning
Private functions are mainly for internal/developer use and their API might change without notice.
_pad_zeros |
Pad num zeros at both sides of array a |
_xcorr_padzeros |
Cross-correlation using SciPy with mode=’valid’ and precedent zero padding |
_xcorr_slice |
Cross-correlation using SciPy with mode=’full’ and subsequent slicing |