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