|
1
|
|
|
# Copyright (c) 2008-2015 MetPy Developers. |
|
2
|
|
|
# Distributed under the terms of the BSD 3-Clause License. |
|
3
|
|
|
# SPDX-License-Identifier: BSD-3-Clause |
|
4
|
|
|
"""Tests for the `skewt` module.""" |
|
5
|
|
|
|
|
6
|
|
|
from matplotlib.gridspec import GridSpec |
|
7
|
|
|
import matplotlib.pyplot as plt |
|
8
|
|
|
import numpy as np |
|
9
|
|
|
import pytest |
|
10
|
|
|
|
|
11
|
|
|
from metpy.plots import Hodograph, SkewT |
|
12
|
|
|
# Fixtures to make sure we have the right backend and consistent round |
|
13
|
|
|
from metpy.testing import patch_round, set_agg_backend # noqa: F401 |
|
14
|
|
|
from metpy.units import units |
|
15
|
|
|
|
|
16
|
|
|
|
|
17
|
|
|
@pytest.mark.mpl_image_compare(tolerance=0.021, remove_text=True) |
|
18
|
|
|
def test_skewt_api(): |
|
19
|
|
|
"""Test the SkewT API.""" |
|
20
|
|
|
fig = plt.figure(figsize=(9, 9)) |
|
21
|
|
|
skew = SkewT(fig) |
|
22
|
|
|
|
|
23
|
|
|
# Plot the data using normal plotting functions, in this case using |
|
24
|
|
|
# log scaling in Y, as dictated by the typical meteorological plot |
|
25
|
|
|
p = np.linspace(1000, 100, 10) |
|
26
|
|
|
t = np.linspace(20, -20, 10) |
|
27
|
|
|
u = np.linspace(-10, 10, 10) |
|
28
|
|
|
skew.plot(p, t, 'r') |
|
29
|
|
|
skew.plot_barbs(p, u, u) |
|
30
|
|
|
|
|
31
|
|
|
# Add the relevant special lines |
|
32
|
|
|
skew.plot_dry_adiabats() |
|
33
|
|
|
skew.plot_moist_adiabats() |
|
34
|
|
|
skew.plot_mixing_lines() |
|
35
|
|
|
|
|
36
|
|
|
return fig |
|
37
|
|
|
|
|
38
|
|
|
|
|
39
|
|
|
@pytest.mark.mpl_image_compare(tolerance=0, remove_text=True) |
|
40
|
|
|
def test_skewt_subplot(): |
|
41
|
|
|
"""Test using SkewT on a sub-plot.""" |
|
42
|
|
|
fig = plt.figure(figsize=(9, 9)) |
|
43
|
|
|
SkewT(fig, subplot=(2, 2, 1)) |
|
44
|
|
|
return fig |
|
45
|
|
|
|
|
46
|
|
|
|
|
47
|
|
|
@pytest.mark.mpl_image_compare(tolerance=0, remove_text=True) |
|
48
|
|
|
def test_skewt_gridspec(): |
|
49
|
|
|
"""Test using SkewT on a sub-plot.""" |
|
50
|
|
|
fig = plt.figure(figsize=(9, 9)) |
|
51
|
|
|
gs = GridSpec(1, 2) |
|
52
|
|
|
SkewT(fig, subplot=gs[0, 1]) |
|
53
|
|
|
return fig |
|
54
|
|
|
|
|
55
|
|
|
|
|
56
|
|
|
def test_skewt_with_grid_enabled(): |
|
57
|
|
|
"""Test using SkewT when gridlines are already enabled (#271).""" |
|
58
|
|
|
with plt.rc_context(rc={'axes.grid': True}): |
|
59
|
|
|
# Also tests when we don't pass in Figure |
|
60
|
|
|
SkewT() |
|
61
|
|
|
|
|
62
|
|
|
|
|
63
|
|
|
@pytest.mark.mpl_image_compare(tolerance=0, remove_text=True) |
|
64
|
|
|
def test_hodograph_api(): |
|
65
|
|
|
"""Basic test of Hodograph API.""" |
|
66
|
|
|
fig = plt.figure(figsize=(9, 9)) |
|
67
|
|
|
ax = fig.add_subplot(1, 1, 1) |
|
68
|
|
|
hodo = Hodograph(ax, component_range=60) |
|
69
|
|
|
hodo.add_grid(increment=5, color='k') |
|
70
|
|
|
hodo.plot([1, 10], [1, 10], color='red') |
|
71
|
|
|
hodo.plot_colormapped(np.array([1, 3, 5, 10]), np.array([2, 4, 6, 11]), |
|
72
|
|
|
np.array([0.1, 0.3, 0.5, 0.9]), cmap='Greys') |
|
73
|
|
|
return fig |
|
74
|
|
|
|
|
75
|
|
|
|
|
76
|
|
|
@pytest.mark.mpl_image_compare(tolerance=0, remove_text=True) |
|
77
|
|
|
def test_hodograph_units(): |
|
78
|
|
|
"""Test passing unit-ed quantities to Hodograph.""" |
|
79
|
|
|
fig = plt.figure(figsize=(9, 9)) |
|
80
|
|
|
ax = fig.add_subplot(1, 1, 1) |
|
81
|
|
|
hodo = Hodograph(ax) |
|
82
|
|
|
u = np.arange(10) * units.kt |
|
83
|
|
|
v = np.arange(10) * units.kt |
|
84
|
|
|
hodo.plot(u, v) |
|
85
|
|
|
hodo.plot_colormapped(u, v, np.sqrt(u * u + v * v), cmap='Greys') |
|
86
|
|
|
return fig |
|
87
|
|
|
|
|
88
|
|
|
|
|
89
|
|
|
def test_hodograph_alone(): |
|
90
|
|
|
"""Test to create Hodograph without specifying axes.""" |
|
91
|
|
|
Hodograph() |
|
92
|
|
|
|
Unidata /
MetPy
