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test_network.py
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test_network.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Test suite for the network class.
:copyright:
Lion Krischer (krischer@geophysik.uni-muenchen.de), 2013
:license:
GNU Lesser General Public License, Version 3
(https://www.gnu.org/copyleft/lesser.html)
"""
from __future__ import (absolute_import, division, print_function,
unicode_literals)
from future.builtins import * # NOQA
import io
import os
import unittest
import warnings
import numpy as np
from matplotlib import rcParams
import obspy
from obspy import UTCDateTime, read_inventory
from obspy.core.compatibility import mock
from obspy.core.util import (
BASEMAP_VERSION, CARTOPY_VERSION, MATPLOTLIB_VERSION)
from obspy.core.util.testing import ImageComparison
from obspy.core.inventory import Channel, Network, Response, Station
class NetworkTestCase(unittest.TestCase):
"""
Tests for the :class:`~obspy.core.inventory.network.Network` class.
"""
def setUp(self):
self.image_dir = os.path.join(os.path.dirname(__file__), 'images')
self.nperr = np.geterr()
np.seterr(all='ignore')
def tearDown(self):
np.seterr(**self.nperr)
def test_get_response(self):
response_n1_s1 = Response('RESPN1S1')
response_n1_s2 = Response('RESPN1S2')
response_n2_s1 = Response('RESPN2S1')
channels_n1_s1 = [Channel(code='BHZ',
location_code='',
latitude=0.0,
longitude=0.0,
elevation=0.0,
depth=0.0,
response=response_n1_s1)]
channels_n1_s2 = [Channel(code='BHZ',
location_code='',
latitude=0.0,
longitude=0.0,
elevation=0.0,
depth=0.0,
response=response_n1_s2)]
channels_n2_s1 = [Channel(code='BHZ',
location_code='',
latitude=0.0,
longitude=0.0,
elevation=0.0,
depth=0.0,
response=response_n2_s1)]
stations_1 = [Station(code='N1S1',
latitude=0.0,
longitude=0.0,
elevation=0.0,
channels=channels_n1_s1),
Station(code='N1S2',
latitude=0.0,
longitude=0.0,
elevation=0.0,
channels=channels_n1_s2),
Station(code='N2S1',
latitude=0.0,
longitude=0.0,
elevation=0.0,
channels=channels_n2_s1)]
network = Network('N1', stations=stations_1)
response = network.get_response('N1.N1S1..BHZ',
UTCDateTime('2010-01-01T12:00'))
self.assertEqual(response, response_n1_s1)
response = network.get_response('N1.N1S2..BHZ',
UTCDateTime('2010-01-01T12:00'))
self.assertEqual(response, response_n1_s2)
response = network.get_response('N1.N2S1..BHZ',
UTCDateTime('2010-01-01T12:00'))
self.assertEqual(response, response_n2_s1)
def test_get_coordinates(self):
"""
Test extracting coordinates
"""
expected = {u'latitude': 47.737166999999999,
u'longitude': 12.795714,
u'elevation': 860.0,
u'local_depth': 0.0}
channels = [Channel(code='EHZ',
location_code='',
start_date=UTCDateTime('2007-01-01'),
latitude=47.737166999999999,
longitude=12.795714,
elevation=860.0,
depth=0.0)]
stations = [Station(code='RJOB',
latitude=0.0,
longitude=0.0,
elevation=0.0,
channels=channels)]
network = Network('BW', stations=stations)
# 1
coordinates = network.get_coordinates('BW.RJOB..EHZ',
UTCDateTime('2010-01-01T12:00'))
self.assertEqual(sorted(coordinates.items()), sorted(expected.items()))
# 2 - without datetime
coordinates = network.get_coordinates('BW.RJOB..EHZ')
self.assertEqual(sorted(coordinates.items()), sorted(expected.items()))
# 3 - unknown SEED ID should raise exception
self.assertRaises(Exception, network.get_coordinates, 'BW.RJOB..XXX')
def test_response_plot(self):
"""
Tests the response plot.
"""
# Bug in matplotlib 1.4.0 - 1.4.x:
# See https://github.com/matplotlib/matplotlib/issues/4012
reltol = 1.0
if [1, 4, 0] <= MATPLOTLIB_VERSION <= [1, 5, 0]:
reltol = 2.0
net = read_inventory()[0]
t = UTCDateTime(2008, 7, 1)
with warnings.catch_warnings(record=True):
warnings.simplefilter("ignore")
with ImageComparison(self.image_dir, "network_response.png",
reltol=reltol) as ic:
rcParams['savefig.dpi'] = 72
net.plot_response(0.002, output="DISP", channel="B*E",
time=t, outfile=ic.name)
def test_len(self):
"""
Tests the __len__ property.
"""
net = read_inventory()[0]
self.assertEqual(len(net), len(net.stations))
self.assertEqual(len(net), 2)
def test_network_select(self):
"""
Test for the select() method of the network class.
"""
net = read_inventory()[0]
# Basic asserts to assert some things about the test data.
self.assertEqual(len(net), 2)
self.assertEqual(len(net[0]), 12)
self.assertEqual(len(net[1]), 9)
self.assertEqual(sum(len(i) for i in net), 21)
# Artificially move the start time of the first station before the
# channel start times.
net[0].start_date = UTCDateTime(1999, 1, 1)
# Nothing happens if nothing is specified or if everything is selected.
self.assertEqual(sum(len(i) for i in net.select()), 21)
self.assertEqual(sum(len(i) for i in net.select(station="*")), 21)
self.assertEqual(sum(len(i) for i in net.select(location="*")), 21)
self.assertEqual(sum(len(i) for i in net.select(channel="*")), 21)
self.assertEqual(sum(len(i) for i in net.select(
station="*", location="*", channel="*")), 21)
# No matching station.
self.assertEqual(sum(len(i) for i in net.select(station="RR")), 0)
# keep_empty does not do anything in these cases.
self.assertEqual(sum(len(i) for i in
net.select(station="RR", keep_empty=True)), 0)
# Selecting only one station.
self.assertEqual(sum(len(i) for i in
net.select(station="FUR", keep_empty=True)), 12)
self.assertEqual(sum(len(i) for i in
net.select(station="F*", keep_empty=True)), 12)
self.assertEqual(sum(len(i) for i in
net.select(station="WET", keep_empty=True)), 9)
# Test the keep_empty flag.
net_2 = net.select(time=UTCDateTime(2000, 1, 1))
self.assertEqual(len(net_2), 0)
self.assertEqual(sum(len(i) for i in net_2), 0)
# One is kept - it has no more channels but the station still has a
# valid start time.
net_2 = net.select(time=UTCDateTime(2000, 1, 1), keep_empty=True)
self.assertEqual(len(net_2), 1)
self.assertEqual(sum(len(i) for i in net_2), 0)
# location, channel, time, starttime, endtime, and sampling_rate are
# also passed on to the station selector.
select_kwargs = {
"location": "00",
"channel": "EHE",
"time": UTCDateTime(2001, 1, 1),
"sampling_rate": 123.0,
"starttime": UTCDateTime(2002, 1, 1),
"endtime": UTCDateTime(2003, 1, 1)}
with mock.patch("obspy.core.inventory.station.Station.select") as p:
p.return_value = obspy.core.inventory.station.Station("FUR", 1,
2, 3)
net.select(**select_kwargs)
self.assertEqual(p.call_args[1], select_kwargs)
def test_writing_network_before_1990(self):
inv = obspy.Inventory(networks=[
Network(code="XX", start_date=obspy.UTCDateTime(1880, 1, 1))],
source="")
with io.BytesIO() as buf:
inv.write(buf, format="stationxml")
buf.seek(0, 0)
inv2 = read_inventory(buf)
self.assertEqual(inv.networks[0], inv2.networks[0])
def test_network_select_with_empty_stations(self):
"""
Tests the behaviour of the Network.select() method for empty stations.
"""
net = read_inventory()[0]
# Delete all channels.
for sta in net:
sta.channels = []
# 2 stations and 0 channels remain.
self.assertEqual(len(net), 2)
self.assertEqual(sum(len(sta) for sta in net), 0)
# No arguments, everything should be selected.
self.assertEqual(len(net.select()), 2)
# Everything selected, nothing should happen.
self.assertEqual(len(net.select(station="*")), 2)
# Only select a single station.
self.assertEqual(len(net.select(station="FUR")), 1)
self.assertEqual(len(net.select(station="FU?")), 1)
self.assertEqual(len(net.select(station="W?T")), 1)
# Once again, this time with the time selection.
self.assertEqual(len(net.select(time=UTCDateTime(2006, 1, 1))), 0)
self.assertEqual(len(net.select(time=UTCDateTime(2007, 1, 1))), 1)
self.assertEqual(len(net.select(time=UTCDateTime(2008, 1, 1))), 2)
@unittest.skipIf(not BASEMAP_VERSION, 'basemap not installed')
class NetworkBasemapTestCase(unittest.TestCase):
"""
Tests for the :meth:`~obspy.station.network.Network.plot` with Basemap.
"""
def setUp(self):
self.image_dir = os.path.join(os.path.dirname(__file__), 'images')
self.nperr = np.geterr()
np.seterr(all='ignore')
def tearDown(self):
np.seterr(**self.nperr)
def test_location_plot_global(self):
"""
Tests the network location preview plot, default parameters, using
Basemap.
"""
net = read_inventory()[0]
reltol = 1.3
# Coordinate lines might be slightly off, depending on the basemap
# version.
if BASEMAP_VERSION < [1, 0, 7]:
reltol = 3.0
with ImageComparison(self.image_dir, 'network_location-basemap1.png',
reltol=reltol) as ic:
rcParams['savefig.dpi'] = 72
net.plot(method='basemap', outfile=ic.name)
def test_location_plot_ortho(self):
"""
Tests the network location preview plot, ortho projection, some
non-default parameters, using Basemap.
"""
net = read_inventory()[0]
with ImageComparison(self.image_dir,
'network_location-basemap2.png') as ic:
rcParams['savefig.dpi'] = 72
net.plot(method='basemap', projection='ortho', resolution='c',
continent_fill_color='0.5', marker='d',
color='yellow', label=False, outfile=ic.name)
def test_location_plot_local(self):
"""
Tests the network location preview plot, local projection, some more
non-default parameters, using Basemap.
"""
net = read_inventory()[0]
# Coordinate lines might be slightly off, depending on the basemap
# version.
reltol = 2.0
# Basemap smaller 1.0.4 has a serious issue with plotting. Thus the
# tolerance must be much higher.
if BASEMAP_VERSION < [1, 0, 4]:
reltol = 100.0
with ImageComparison(self.image_dir, 'network_location-basemap3.png',
reltol=reltol) as ic:
rcParams['savefig.dpi'] = 72
net.plot(method='basemap', projection='local', resolution='l',
size=13**2, outfile=ic.name)
@unittest.skipIf(not (CARTOPY_VERSION and CARTOPY_VERSION >= [0, 12, 0]),
'cartopy not installed')
class NetworkCartopyTestCase(unittest.TestCase):
"""
Tests for the :meth:`~obspy.station.network.Network.plot` with Cartopy.
"""
def setUp(self):
self.image_dir = os.path.join(os.path.dirname(__file__), 'images')
self.nperr = np.geterr()
np.seterr(all='ignore')
def tearDown(self):
np.seterr(**self.nperr)
def test_location_plot_global(self):
"""
Tests the network location preview plot, default parameters, using
Cartopy.
"""
net = read_inventory()[0]
with ImageComparison(self.image_dir,
'network_location-cartopy1.png') as ic:
rcParams['savefig.dpi'] = 72
net.plot(method='cartopy', outfile=ic.name)
def test_location_plot_ortho(self):
"""
Tests the network location preview plot, ortho projection, some
non-default parameters, using Cartopy.
"""
net = read_inventory()[0]
with ImageComparison(self.image_dir,
'network_location-cartopy2.png') as ic:
rcParams['savefig.dpi'] = 72
net.plot(method='cartopy', projection='ortho', resolution='c',
continent_fill_color='0.5', marker='d',
color='yellow', label=False, outfile=ic.name)
def test_location_plot_local(self):
"""
Tests the network location preview plot, local projection, some more
non-default parameters, using Cartopy.
"""
net = read_inventory()[0]
with ImageComparison(self.image_dir,
'network_location-cartopy3.png') as ic:
rcParams['savefig.dpi'] = 72
net.plot(method='cartopy', projection='local', resolution='50m',
size=13**2, outfile=ic.name)
def suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(NetworkTestCase, 'test'))
suite.addTest(unittest.makeSuite(NetworkBasemapTestCase, 'test'))
suite.addTest(unittest.makeSuite(NetworkCartopyTestCase, 'test'))
return suite
if __name__ == '__main__':
unittest.main(defaultTest='suite')