obspy.signal.trigger

Various routines related to triggering/picking

Module implementing the Recursive STA/LTA. Two versions, a fast ctypes one and a bit slower python one. Furthermore, the classic and delayed STA/LTA, the carl_sta_trig and the z_detect are implemented. Also includes picking routines, routines for evaluation and visualization of characteristic functions and a coincidence triggering routine.

See also

[Withers1998] (p. 98) and [Trnkoczy2012]

copyright:

The ObsPy Development Team (devs@obspy.org)

license:

GNU Lesser General Public License, Version 3 (https://www.gnu.org/copyleft/lesser.html)

Public Functions

aic_simple	Simple Akaike Information Criterion [Maeda1985].
ar_pick	Pick P and S arrivals with an AR-AIC + STA/LTA algorithm.
carl_sta_trig	Computes the carlSTAtrig characteristic function.
classic_sta_lta	Computes the standard STA/LTA from a given input array a.
classic_sta_lta_py	Computes the standard STA/LTA from a given input array a.
coincidence_trigger	Perform a network coincidence trigger.
delayed_sta_lta	Delayed STA/LTA.
energy_ratio	Energy ratio detector.
modified_energy_ratio	Modified energy ratio detector.
pk_baer	Wrapper for P-picker routine by M.
plot_trace	Plot characteristic function of trigger along with waveform data.
plot_trigger	Plot characteristic function of trigger along with waveform data and trigger On/Off from given thresholds.
recursive_sta_lta	Recursive STA/LTA.
recursive_sta_lta_py	Recursive STA/LTA written in Python.
trigger_onset	Calculate trigger on and off times.
z_detect	Z-detector.