/usr/lib/python2.7/dist-packages/cartopy/tests/test_img_tiles.py is in python-cartopy 0.14.2+dfsg1-2build3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 | # (C) British Crown Copyright 2011 - 2016, Met Office
#
# 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/>.
from __future__ import (absolute_import, division, print_function)
import types
from nose.tools import assert_equal, assert_raises
import numpy as np
from numpy.testing import assert_array_almost_equal as assert_arr_almost
import shapely.geometry as sgeom
import cartopy.crs as ccrs
import cartopy.io.img_tiles as cimgt
#: Maps Google tile coordinates to native mercator coordinates as defined
#: by https://goo.gl/pgJi.
KNOWN_EXTENTS = {(0, 0, 0): (-20037508.342789244, 20037508.342789244,
-20037508.342789244, 20037508.342789244),
(2, 0, 2): (0., 10018754.17139462,
10018754.17139462, 20037508.342789244),
(0, 2, 2): (-20037508.342789244, -10018754.171394622,
-10018754.171394622, 0),
(2, 2, 2): (0, 10018754.17139462,
-10018754.171394622, 0),
(8, 9, 4): (0, 2504688.542848654,
-5009377.085697312, -2504688.542848654),
}
def GOOGLE_IMAGE_URL_REPLACEMENT(self, tile):
url = ('https://chart.googleapis.com/chart?chst=d_text_outline&'
'chs=256x256&chf=bg,s,00000055&chld=FFFFFF|16|h|000000|b||||'
'Google:%20%20(' + str(tile[0]) + ',' + str(tile[1]) + ')'
'|Zoom%20' + str(tile[2]) + '||||||______________________'
'______')
return url
def test_google_tile_styles():
"""
Tests that setting the Google Maps tile style works as expected.
This is essentially just assures information is properly propagated through
the class structure.
"""
reference_url = ("https://mts0.google.com/vt/lyrs={style}@177000000&hl=en"
"&src=api&x=1&y=2&z=3&s=G")
tile = ["1", "2", "3"]
# Default is street.
gt = cimgt.GoogleTiles()
url = gt._image_url(tile)
assert_equal(reference_url.format(style="m"), url)
# Street
gt = cimgt.GoogleTiles(style="street")
url = gt._image_url(tile)
assert_equal(reference_url.format(style="m"), url)
# Satellite
gt = cimgt.GoogleTiles(style="satellite")
url = gt._image_url(tile)
assert_equal(reference_url.format(style="s"), url)
# Terrain
gt = cimgt.GoogleTiles(style="terrain")
url = gt._image_url(tile)
assert_equal(reference_url.format(style="t"), url)
# Streets only
gt = cimgt.GoogleTiles(style="only_streets")
url = gt._image_url(tile)
assert_equal(reference_url.format(style="h"), url)
# Exception is raised if unknown style is passed.
with assert_raises(ValueError):
cimgt.GoogleTiles(style="random_style")
def test_google_wts():
gt = cimgt.GoogleTiles()
ll_target_domain = sgeom.box(-15, 50, 0, 60)
multi_poly = gt.crs.project_geometry(ll_target_domain, ccrs.PlateCarree())
target_domain = multi_poly.geoms[0]
with assert_raises(AssertionError):
list(gt.find_images(target_domain, -1))
assert_equal(tuple(gt.find_images(target_domain, 0)),
((0, 0, 0),))
assert_equal(tuple(gt.find_images(target_domain, 2)),
((1, 1, 2), (2, 1, 2)))
assert_equal(list(gt.subtiles((0, 0, 0))),
[(0, 0, 1), (0, 1, 1), (1, 0, 1), (1, 1, 1)])
assert_equal(list(gt.subtiles((1, 0, 1))),
[(2, 0, 2), (2, 1, 2), (3, 0, 2), (3, 1, 2)])
with assert_raises(AssertionError):
gt.tileextent((0, 1, 0))
assert_arr_almost(gt.tileextent((0, 0, 0)), KNOWN_EXTENTS[(0, 0, 0)])
assert_arr_almost(gt.tileextent((2, 0, 2)), KNOWN_EXTENTS[(2, 0, 2)])
assert_arr_almost(gt.tileextent((0, 2, 2)), KNOWN_EXTENTS[(0, 2, 2)])
assert_arr_almost(gt.tileextent((2, 2, 2)), KNOWN_EXTENTS[(2, 2, 2)])
assert_arr_almost(gt.tileextent((8, 9, 4)), KNOWN_EXTENTS[(8, 9, 4)])
def test_tile_bbox_y0_at_south_pole():
tms = cimgt.MapQuestOpenAerial()
# Check the y0_at_north_pole keywords returns the appropriate bounds.
assert_arr_almost(tms.tile_bbox(8, 6, 4, y0_at_north_pole=False),
np.array(KNOWN_EXTENTS[(8, 9, 4)]).reshape([2, 2]))
def test_tile_find_images():
gt = cimgt.GoogleTiles()
# Test the find_images method on a GoogleTiles instance.
ll_target_domain = sgeom.box(-10, 50, 10, 60)
multi_poly = gt.crs.project_geometry(ll_target_domain, ccrs.PlateCarree())
target_domain = multi_poly.geoms[0]
assert_equal([(7, 4, 4), (7, 5, 4), (8, 4, 4), (8, 5, 4)],
list(gt.find_images(target_domain, 4)))
def test_image_for_domain():
gt = cimgt.GoogleTiles()
gt._image_url = types.MethodType(GOOGLE_IMAGE_URL_REPLACEMENT, gt)
ll_target_domain = sgeom.box(-10, 50, 10, 60)
multi_poly = gt.crs.project_geometry(ll_target_domain, ccrs.PlateCarree())
target_domain = multi_poly.geoms[0]
_, extent, _ = gt.image_for_domain(target_domain, 6)
ll_extent = ccrs.Geodetic().transform_points(gt.crs,
np.array(extent[:2]),
np.array(extent[2:]))
assert_arr_almost(ll_extent[:, :2],
[[-11.25, 48.92249926],
[11.25, 61.60639637]])
def test_quadtree_wts():
qt = cimgt.QuadtreeTiles()
ll_target_domain = sgeom.box(-15, 50, 0, 60)
multi_poly = qt.crs.project_geometry(ll_target_domain, ccrs.PlateCarree())
target_domain = multi_poly.geoms[0]
with assert_raises(ValueError):
list(qt.find_images(target_domain, 0))
assert_equal(qt.tms_to_quadkey((1, 1, 1)), '1')
assert_equal(qt.quadkey_to_tms('1'), (1, 1, 1))
assert_equal(qt.tms_to_quadkey((8, 9, 4)), '1220')
assert_equal(qt.quadkey_to_tms('1220'), (8, 9, 4))
assert_equal(tuple(qt.find_images(target_domain, 1)), ('0', '1'))
assert_equal(tuple(qt.find_images(target_domain, 2)), ('03', '12'))
assert_equal(list(qt.subtiles('0')), ['00', '01', '02', '03'])
assert_equal(list(qt.subtiles('11')), ['110', '111', '112', '113'])
with assert_raises(ValueError):
qt.tileextent('4')
assert_arr_almost(qt.tileextent(''), KNOWN_EXTENTS[(0, 0, 0)])
assert_arr_almost(qt.tileextent(qt.tms_to_quadkey((2, 0, 2), google=True)),
KNOWN_EXTENTS[(2, 0, 2)])
assert_arr_almost(qt.tileextent(qt.tms_to_quadkey((0, 2, 2), google=True)),
KNOWN_EXTENTS[(0, 2, 2)])
assert_arr_almost(qt.tileextent(qt.tms_to_quadkey((2, 0, 2), google=True)),
KNOWN_EXTENTS[(2, 0, 2)])
assert_arr_almost(qt.tileextent(qt.tms_to_quadkey((2, 2, 2), google=True)),
KNOWN_EXTENTS[(2, 2, 2)])
assert_arr_almost(qt.tileextent(qt.tms_to_quadkey((8, 9, 4), google=True)),
KNOWN_EXTENTS[(8, 9, 4)])
def test_mapbox_tiles():
token = 'foo'
map_id = 'bar'
tile = [0, 1, 2]
exp_url = 'https://api.tiles.mapbox.com/v4/bar/2/0/1.png?access_token=foo'
mapbox_sample = cimgt.MapboxTiles(token, map_id)
url_str = mapbox_sample._image_url(tile)
assert_equal(url_str, exp_url)
if __name__ == '__main__':
import nose
nose.runmodule(argv=['-s', '--with-doctest'], exit=False)
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