obspy.io.dmc - INGV DMX file format reader for ObsPy

Functions to read waveform data from the standard INGV DMX format.

author

Thomas Lecocq Andrea Cannatta

copyright

The ObsPy Development Team (devs@obspy.org)

license

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

Reading the waveforms

Reading DMX is handled by using ObsPy’s standard read() function. The format can be detected automatically, however setting the format parameter as “DMX” lead to a speed up. One optional keyword argument is available: station. It is automatically passed to the obspy.io.dmx.core._read_dmx(). Its format

>>> from obspy import read
>>> # these two are equivalent, but the second case should be faster:
>>> st = read("/path/to/131114_090600.dmx")
>>> print(st)  
2 Trace(s) in Stream:
ETNA.EMFO..Z | 2013-11-14T09:06:00.000000Z - 2013-11-14T09:06:59.990000Z | 100.0 Hz, 6000 samples
ETNA.EMPL..Z | 2013-11-14T09:06:00.000000Z - 2013-11-14T09:06:59.990000Z | 100.0 Hz, 6000 samples

>>> st = read("/path/to/131114_090600.dmx", format='DMX')
>>> print(st)  
2 Trace(s) in Stream:
ETNA.EMFO..Z | 2013-11-14T09:06:00.000000Z - 2013-11-14T09:06:59.990000Z | 100.0 Hz, 6000 samples
ETNA.EMPL..Z | 2013-11-14T09:06:00.000000Z - 2013-11-14T09:06:59.990000Z | 100.0 Hz, 6000 samples

If the file is very large and only one station code needs to be fetched, using the station parameter may speed the reading process:

>>> st = read("/path/to/131114_090600.dmx", station="EMFO")
>>> print(st)  
1 Trace(s) in Stream:
ETNA.EMFO..Z | 2013-11-14T09:06:00.000000Z - 2013-11-14T09:06:59.990000Z | 100.0 Hz, 6000 samples

Modules

core	INGV DMX bindings to ObsPy core module.