marcel/pylot
3
0
Fork 0
Code Issues 17 Pull Requests 1 Releases Wiki Activity

[bugfix] determination of zero crossings breaks down if data is not demeaned in the signal window (explicitly demeaning data in the signal window when determining the zero crossings)

Browse Source
This commit is contained in:
Sebastian Wehling-Benatelli 2015-06-22 10:52:26 +02:00
parent a95caa5efc
commit 864ef6c64d
1 changed files with 10 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
pylot/core/pick/utils.py
View File

@ -65,8 +65,8 @@ def earllatepicker(X, nfac, TSNR, Pick1, iplot=None):
#get earliest possible pick
#determine all zero crossings in signal window
zc = crossings_nonzero_all(x[isignal])
#determine all zero crossings in signal window (demeaned)
zc = crossings_nonzero_all(x[isignal] - x[isignal].mean())
#calculate mean half period T0 of signal as the average of the
T0 = np.mean(np.diff(zc)) * X[0].stats.delta #this is half wave length!
#T0/4 is assumed as time difference between most likely and earliest possible pick!