86 lines
3.0 KiB
Python
Executable File
86 lines
3.0 KiB
Python
Executable File
#! /usr/bin/env python
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# -*- coding: utf-8 -*-
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'''
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Script to lookup city names of events with Nominatim service
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The input should be an valid quakeML file passed to stdin.
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The output will will be a javascript structure to be included in the
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SeisObs map service.
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The script should be updated regulary keep the total number of all
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AJAX calls to the Nominatim service small, e. g. :
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curl -s "https://ariadne.geophysik.ruhr-uni-bochum.de/fdsnws/event/1/query?minlat=50&maxlat=54&minlon=3&maxlon=10&minmag=1" | mkGeolocationTable.py > geolocationTable.js
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License
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Copyright 2014 Kasper D. Fischer <kasper.fischer@rub.de>
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This program is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with this program. If not, see http://www.gnu.org/licenses/.
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$Id$
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'''
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# imports
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try:
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import xml.etree.cElementTree as ET
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except ImportError:
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import xml.etree.ElementTree as ET
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from sys import stdin
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import warnings
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import urllib2 as URL
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import json as JSON
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# constants
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namespaces = {'sc3': 'http://geofon.gfz-potsdam.de/ns/seiscomp3-schema/0.7',
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'qml': 'http://quakeml.org/xmlns/bed/1.2'}
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# initialise variables
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geolocationTable = {};
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def simple_warning(message, category, filename, lineno, file=None, line=None):
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return 'Warning: %s\n' % (message)
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warnings.formatwarning = simple_warning
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# parse event.xml
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DOM = ET.parse(stdin).getroot()
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# iterate over all events
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for event in DOM.iterfind('qml:eventParameters/qml:event', namespaces):
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publicID = event.attrib['publicID'].split('/')[2]
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lat = event.find('./qml:origin/qml:latitude/qml:value', namespaces).text
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lng = event.find('./qml:origin/qml:longitude/qml:value', namespaces).text
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url = 'https://open.mapquestapi.com/nominatim/v1/reverse.php?lat={0}&lon={1}&zoom=10&format=json'.format(lat, lng)
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# send and evaluate nominatim request
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response = URL.urlopen(url)
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if ( response.msg == 'OK' ):
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data = JSON.loads(response.read())
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try:
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try:
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city = data['address']['city']
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except:
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warnings.warn('Using county instead of city for event {0} at {1} N / {2} E (URL: {3})'.format(publicID, lat, lng, url))
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city = data['address']['county']
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country = data['address']['country']
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countryCode = data['address']['country_code'].upper()
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value = city
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if ( countryCode != 'DE' ):
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value = '{0} ({1})'.format(value, countryCode)
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geolocationTable[publicID] = value
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except:
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warnings.warn('Could not extract city for event {0} at {1} N / {2} E (URL: {3})'.format(publicID, lat, lng, url))
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else:
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warnings.warn('Request {0} failed'.format(url))
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# dump json
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print 'var geolocationTable = '+JSON.dumps(geolocationTable)+';'
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