/usr/lib/python2.7/dist-packages/cartopy/tests/crs/test_geostationary.py is in python-cartopy 0.14.2+dfsg1-2build3.
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#
# This file is part of cartopy.
#
# cartopy is free software: you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the
# Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cartopy is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with cartopy. If not, see <https://www.gnu.org/licenses/>.
"""
Tests for the Geostationary projection.
"""
from __future__ import (absolute_import, division, print_function)
import unittest
from numpy.testing import assert_almost_equal
from nose.tools import assert_equal
import cartopy.crs as ccrs
class TestGeostationary(unittest.TestCase):
def check_proj4_params(self, crs, expected):
pro4_params = sorted(crs.proj4_init.split(' +'))
assert_equal(expected, pro4_params)
def test_default(self):
geos = ccrs.Geostationary()
expected = ['+ellps=WGS84', 'h=35785831', 'lat_0=0', 'lon_0=0.0',
'no_defs', 'proj=geos', 'units=m', 'x_0=0', 'y_0=0']
self.check_proj4_params(geos, expected)
assert_almost_equal(geos.boundary.bounds,
(-5372584.78443894, -5372584.78443894,
5372584.78443894, 5372584.78443894),
decimal=4)
def test_eccentric_globe(self):
globe = ccrs.Globe(semimajor_axis=10000, semiminor_axis=5000,
ellipse=None)
geos = ccrs.Geostationary(satellite_height=50000,
globe=globe)
expected = ['+a=10000', 'b=5000', 'h=50000', 'lat_0=0', 'lon_0=0.0',
'no_defs', 'proj=geos', 'units=m', 'x_0=0', 'y_0=0']
self.check_proj4_params(geos, expected)
assert_almost_equal(geos.boundary.bounds,
(-8257.4338, -4532.9943, 8257.4338, 4532.9943),
decimal=4)
def test_eastings(self):
geos = ccrs.Geostationary(false_easting=5000000,
false_northing=-125000,)
expected = ['+ellps=WGS84', 'h=35785831', 'lat_0=0', 'lon_0=0.0',
'no_defs', 'proj=geos', 'units=m', 'x_0=5000000',
'y_0=-125000']
self.check_proj4_params(geos, expected)
assert_almost_equal(geos.boundary.bounds,
(-372584.78443894, -5497584.78443894,
10372584.78443894, 5247584.78443894),
decimal=4)
if __name__ == '__main__':
import nose
nose.runmodule(argv=['-s', '--with-doctest'], exit=False)
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