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
|
# (C) British Crown Copyright 2017 - 2018, 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 cartopy.feature as cfeature
small_extent = (-6, -8, 56, 59)
medium_extent = (-20, 20, 20, 60)
large_extent = (-40, 40, 0, 80)
auto_scaler = cfeature.AdaptiveScaler('110m', (('50m', 50), ('10m', 15)))
auto_land = cfeature.NaturalEarthFeature('physical', 'land', auto_scaler)
class TestFeatures(object):
def test_change_scale(self):
# Check that features can easily be retrieved with a different
# scale.
new_lakes = cfeature.LAKES.with_scale('10m')
assert new_lakes.scale == '10m'
assert new_lakes.kwargs == cfeature.LAKES.kwargs
assert new_lakes.category == cfeature.LAKES.category
assert new_lakes.name == cfeature.LAKES.name
def test_scale_from_extent(self):
# Check that scaler.scale_from_extent returns the appropriate
# scales.
small_scale = auto_land.scaler.scale_from_extent(small_extent)
medium_scale = auto_land.scaler.scale_from_extent(medium_extent)
large_scale = auto_land.scaler.scale_from_extent(large_extent)
assert small_scale == '10m'
assert medium_scale == '50m'
assert large_scale == '110m'
def test_intersecting_geometries_small(self, monkeypatch):
# Patch so we don't actually try to download anything.
monkeypatch.setattr(auto_land, 'geometries', lambda: [])
# Check that intersecting_geometries will set the scale to
# '10m' when the extent is small and autoscale is True.
auto_land.intersecting_geometries(small_extent)
assert auto_land.scale == '10m'
def test_intersecting_geometries_medium(self, monkeypatch):
# Patch so we don't actually try to download anything.
monkeypatch.setattr(auto_land, 'geometries', lambda: [])
# Check that intersecting_geometries will set the scale to
# '50m' when the extent is medium and autoscale is True.
auto_land.intersecting_geometries(medium_extent)
assert auto_land.scale == '50m'
def test_intersecting_geometries_large(self, monkeypatch):
# Patch so we don't actually try to download anything.
monkeypatch.setattr(auto_land, 'geometries', lambda: [])
# Check that intersecting_geometries will set the scale to
# '110m' when the extent is large and autoscale is True.
auto_land.intersecting_geometries(large_extent)
assert auto_land.scale == '110m'
|
