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* added gcmt accessor from ISC API. Follows the same logic than comcat and bsi readers. Created test for an event search and summary info from a request.
* fix: reworked catalog accessor. Retrieving from IRIS ("https://service.iris.edu/fdsnws/event/1/") in text file, which is faster and safer.
tests: fixed event list location- Loading branch information
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,132 @@ | ||
| # python imports | ||
| from datetime import datetime | ||
| from urllib import request | ||
| from urllib.parse import urlencode | ||
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| # PyCSEP imports | ||
| from csep.utils.time_utils import datetime_to_utc_epoch | ||
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| HOST_CATALOG = "https://service.iris.edu/fdsnws/event/1/query?" | ||
| TIMEOUT = 180 | ||
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| def gcmt_search(format='text', | ||
| starttime=None, | ||
| endtime=None, | ||
| updatedafter=None, | ||
| minlatitude=None, | ||
| maxlatitude=None, | ||
| minlongitude=None, | ||
| maxlongitude=None, | ||
| latitude=None, | ||
| longitude=None, | ||
| maxradius=None, | ||
| catalog='GCMT', | ||
| contributor=None, | ||
| maxdepth=1000, | ||
| maxmagnitude=10.0, | ||
| mindepth=-100, | ||
| minmagnitude=0, | ||
| offset=1, | ||
| orderby='time-asc', | ||
| host=None, | ||
| verbose=False): | ||
| """Search the IRIS database for events matching input criteria. | ||
| This search function is a wrapper around the ComCat Web API described here: | ||
| https://service.iris.edu/fdsnws/event/1/ | ||
| This function returns a list of SummaryEvent objects, described elsewhere in this package. | ||
| Args: | ||
| starttime (datetime): | ||
| Python datetime - Limit to events on or after the specified start time. | ||
| endtime (datetime): | ||
| Python datetime - Limit to events on or before the specified end time. | ||
| updatedafter (datetime): | ||
| Python datetime - Limit to events updated after the specified time. | ||
| minlatitude (float): | ||
| Limit to events with a latitude larger than the specified minimum. | ||
| maxlatitude (float): | ||
| Limit to events with a latitude smaller than the specified maximum. | ||
| minlongitude (float): | ||
| Limit to events with a longitude larger than the specified minimum. | ||
| maxlongitude (float): | ||
| Limit to events with a longitude smaller than the specified maximum. | ||
| latitude (float): | ||
| Specify the latitude to be used for a radius search. | ||
| longitude (float): | ||
| Specify the longitude to be used for a radius search. | ||
| maxradius (float): | ||
| Limit to events within the specified maximum number of degrees | ||
| from the geographic point defined by the latitude and longitude parameters. | ||
| catalog (str): | ||
| Limit to events from a specified catalog. | ||
| contributor (str): | ||
| Limit to events contributed by a specified contributor. | ||
| maxdepth (float): | ||
| Limit to events with depth less than the specified maximum. | ||
| maxmagnitude (float): | ||
| Limit to events with a magnitude smaller than the specified maximum. | ||
| mindepth (float): | ||
| Limit to events with depth more than the specified minimum. | ||
| minmagnitude (float): | ||
| Limit to events with a magnitude larger than the specified minimum. | ||
| offset (int): | ||
| Return results starting at the event count specified, starting at 1. | ||
| orderby (str): | ||
| Order the results. The allowed values are: | ||
| - time order by origin descending time | ||
| - time-asc order by origin ascending time | ||
| - magnitude order by descending magnitude | ||
| - magnitude-asc order by ascending magnitude | ||
| host (str): | ||
| Replace default ComCat host (earthquake.usgs.gov) with a custom host. | ||
| Returns: | ||
| list: List of SummaryEvent() objects. | ||
| """ | ||
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| # getting the inputargs must be the first line of the method! | ||
| inputargs = locals().copy() | ||
| newargs = {} | ||
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| for key, value in inputargs.items(): | ||
| if value is True: | ||
| newargs[key] = 'true' | ||
| continue | ||
| if value is False: | ||
| newargs[key] = 'false' | ||
| continue | ||
| if value is None: | ||
| continue | ||
| newargs[key] = value | ||
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| del newargs['verbose'] | ||
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| events = _search_gcmt(**newargs) | ||
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| return events | ||
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| def _search_gcmt(**_newargs): | ||
| """ | ||
| Performs de-query at ISC API and returns event list and access date | ||
| """ | ||
| paramstr = urlencode(_newargs) | ||
| url = HOST_CATALOG + paramstr | ||
| fh = request.urlopen(url, timeout=TIMEOUT) | ||
| data = fh.read().decode('utf8').split('\n') | ||
| fh.close() | ||
| eventlist = [] | ||
| for line in data[1:]: | ||
| line_ = line.split('|') | ||
| if len(line_) != 1: | ||
| id_ = line_[0] | ||
| time_ = datetime.fromisoformat(line_[1]) | ||
| dt = datetime_to_utc_epoch(time_) | ||
| lat = float(line_[2]) | ||
| lon = float(line_[3]) | ||
| depth = float(line_[4]) | ||
| mag = float(line_[10]) | ||
| eventlist.append((id_, dt, lat, lon, depth, mag)) | ||
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| return eventlist |
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