I was wondering if you had any ideas about the question above?
I have an earthquake directory with three component SAC waveforms from different broadband seismic stations.
What I want to do is :
to plot them all in one screen and pick P and S arrivals, write them in to the SAC header, then locate the event. Is is possible with ObsPy and if it is which modules I should use?
you could have a look at ObsPyck
(https://github.com/megies/obspyck/wiki) which can be used to set picks
among other things. It mainly interacts with a SeisHub server, but
modifying it to output a QuakeML-like event file to disk is easy.
The ObsPyck documentation is a bit fragmentary, have a look at the wiki
page for the general overview and usage (see screenshots and their text).