/
test_figure.py
1371 lines (1099 loc) · 44 KB
/
test_figure.py
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from datetime import datetime
import io
from pathlib import Path
import pickle
import platform
from threading import Timer
from types import SimpleNamespace
import warnings
import numpy as np
import pytest
from PIL import Image
import matplotlib as mpl
from matplotlib import cbook, rcParams
from matplotlib._api.deprecation import MatplotlibDeprecationWarning
from matplotlib.testing.decorators import image_comparison, check_figures_equal
from matplotlib.axes import Axes
from matplotlib.figure import Figure, FigureBase
from matplotlib.ticker import AutoMinorLocator, FixedFormatter, ScalarFormatter
import matplotlib.pyplot as plt
import matplotlib.dates as mdates
import matplotlib.gridspec as gridspec
@image_comparison(['figure_align_labels'], extensions=['png', 'svg'],
tol=0 if platform.machine() == 'x86_64' else 0.01)
def test_align_labels():
fig = plt.figure(tight_layout=True)
gs = gridspec.GridSpec(3, 3)
ax = fig.add_subplot(gs[0, :2])
ax.plot(np.arange(0, 1e6, 1000))
ax.set_ylabel('Ylabel0 0')
ax = fig.add_subplot(gs[0, -1])
ax.plot(np.arange(0, 1e4, 100))
for i in range(3):
ax = fig.add_subplot(gs[1, i])
ax.set_ylabel('YLabel1 %d' % i)
ax.set_xlabel('XLabel1 %d' % i)
if i in [0, 2]:
ax.xaxis.set_label_position("top")
ax.xaxis.tick_top()
if i == 0:
for tick in ax.get_xticklabels():
tick.set_rotation(90)
if i == 2:
ax.yaxis.set_label_position("right")
ax.yaxis.tick_right()
for i in range(3):
ax = fig.add_subplot(gs[2, i])
ax.set_xlabel(f'XLabel2 {i}')
ax.set_ylabel(f'YLabel2 {i}')
if i == 2:
ax.plot(np.arange(0, 1e4, 10))
ax.yaxis.set_label_position("right")
ax.yaxis.tick_right()
for tick in ax.get_xticklabels():
tick.set_rotation(90)
fig.align_labels()
def test_align_labels_stray_axes():
fig, axs = plt.subplots(2, 2)
for nn, ax in enumerate(axs.flat):
ax.set_xlabel('Boo')
ax.set_xlabel('Who')
ax.plot(np.arange(4)**nn, np.arange(4)**nn)
fig.align_ylabels()
fig.align_xlabels()
fig.draw_without_rendering()
xn = np.zeros(4)
yn = np.zeros(4)
for nn, ax in enumerate(axs.flat):
yn[nn] = ax.xaxis.label.get_position()[1]
xn[nn] = ax.yaxis.label.get_position()[0]
np.testing.assert_allclose(xn[:2], xn[2:])
np.testing.assert_allclose(yn[::2], yn[1::2])
fig, axs = plt.subplots(2, 2, constrained_layout=True)
for nn, ax in enumerate(axs.flat):
ax.set_xlabel('Boo')
ax.set_xlabel('Who')
pc = ax.pcolormesh(np.random.randn(10, 10))
fig.colorbar(pc, ax=ax)
fig.align_ylabels()
fig.align_xlabels()
fig.draw_without_rendering()
xn = np.zeros(4)
yn = np.zeros(4)
for nn, ax in enumerate(axs.flat):
yn[nn] = ax.xaxis.label.get_position()[1]
xn[nn] = ax.yaxis.label.get_position()[0]
np.testing.assert_allclose(xn[:2], xn[2:])
np.testing.assert_allclose(yn[::2], yn[1::2])
def test_figure_label():
# pyplot figure creation, selection, and closing with label/number/instance
plt.close('all')
fig_today = plt.figure('today')
plt.figure(3)
plt.figure('tomorrow')
plt.figure()
plt.figure(0)
plt.figure(1)
plt.figure(3)
assert plt.get_fignums() == [0, 1, 3, 4, 5]
assert plt.get_figlabels() == ['', 'today', '', 'tomorrow', '']
plt.close(10)
plt.close()
plt.close(5)
plt.close('tomorrow')
assert plt.get_fignums() == [0, 1]
assert plt.get_figlabels() == ['', 'today']
plt.figure(fig_today)
assert plt.gcf() == fig_today
with pytest.raises(ValueError):
plt.figure(Figure())
def test_fignum_exists():
# pyplot figure creation, selection and closing with fignum_exists
plt.figure('one')
plt.figure(2)
plt.figure('three')
plt.figure()
assert plt.fignum_exists('one')
assert plt.fignum_exists(2)
assert plt.fignum_exists('three')
assert plt.fignum_exists(4)
plt.close('one')
plt.close(4)
assert not plt.fignum_exists('one')
assert not plt.fignum_exists(4)
def test_clf_keyword():
# test if existing figure is cleared with figure() and subplots()
text1 = 'A fancy plot'
text2 = 'Really fancy!'
fig0 = plt.figure(num=1)
fig0.suptitle(text1)
assert [t.get_text() for t in fig0.texts] == [text1]
fig1 = plt.figure(num=1, clear=False)
fig1.text(0.5, 0.5, text2)
assert fig0 is fig1
assert [t.get_text() for t in fig1.texts] == [text1, text2]
fig2, ax2 = plt.subplots(2, 1, num=1, clear=True)
assert fig0 is fig2
assert [t.get_text() for t in fig2.texts] == []
@image_comparison(['figure_today'])
def test_figure():
# named figure support
fig = plt.figure('today')
ax = fig.add_subplot()
ax.set_title(fig.get_label())
ax.plot(np.arange(5))
# plot red line in a different figure.
plt.figure('tomorrow')
plt.plot([0, 1], [1, 0], 'r')
# Return to the original; make sure the red line is not there.
plt.figure('today')
plt.close('tomorrow')
@image_comparison(['figure_legend'])
def test_figure_legend():
fig, axs = plt.subplots(2)
axs[0].plot([0, 1], [1, 0], label='x', color='g')
axs[0].plot([0, 1], [0, 1], label='y', color='r')
axs[0].plot([0, 1], [0.5, 0.5], label='y', color='k')
axs[1].plot([0, 1], [1, 0], label='_y', color='r')
axs[1].plot([0, 1], [0, 1], label='z', color='b')
fig.legend()
def test_gca():
fig = plt.figure()
with pytest.raises(TypeError):
assert fig.add_axes() is None
ax0 = fig.add_axes([0, 0, 1, 1])
with pytest.warns(
MatplotlibDeprecationWarning,
match=r'Calling gca\(\) with keyword arguments was deprecated'):
assert fig.gca(projection='rectilinear') is ax0
assert fig.gca() is ax0
ax1 = fig.add_axes(rect=[0.1, 0.1, 0.8, 0.8])
with pytest.warns(
MatplotlibDeprecationWarning,
match=r'Calling gca\(\) with keyword arguments was deprecated'):
assert fig.gca(projection='rectilinear') is ax1
assert fig.gca() is ax1
ax2 = fig.add_subplot(121, projection='polar')
assert fig.gca() is ax2
with pytest.warns(
MatplotlibDeprecationWarning,
match=r'Calling gca\(\) with keyword arguments was deprecated'):
assert fig.gca(polar=True) is ax2
ax3 = fig.add_subplot(122)
assert fig.gca() is ax3
with pytest.warns(
MatplotlibDeprecationWarning,
match=r'Calling gca\(\) with keyword arguments was deprecated'):
assert fig.gca(polar=True) is ax3
with pytest.warns(
MatplotlibDeprecationWarning,
match=r'Calling gca\(\) with keyword arguments was deprecated'):
assert fig.gca(polar=True) is not ax2
assert fig.gca().get_subplotspec().get_geometry() == (1, 2, 1, 1)
# add_axes on an existing Axes should not change stored order, but will
# make it current.
fig.add_axes(ax0)
assert fig.axes == [ax0, ax1, ax2, ax3]
assert fig.gca() is ax0
# add_subplot on an existing Axes should not change stored order, but will
# make it current.
fig.add_subplot(ax2)
assert fig.axes == [ax0, ax1, ax2, ax3]
assert fig.gca() is ax2
fig.sca(ax1)
with pytest.warns(
MatplotlibDeprecationWarning,
match=r'Calling gca\(\) with keyword arguments was deprecated'):
assert fig.gca(projection='rectilinear') is ax1
assert fig.gca() is ax1
# sca() should not change stored order of Axes, which is order added.
assert fig.axes == [ax0, ax1, ax2, ax3]
def test_add_subplot_subclass():
fig = plt.figure()
fig.add_subplot(axes_class=Axes)
with pytest.raises(ValueError):
fig.add_subplot(axes_class=Axes, projection="3d")
with pytest.raises(ValueError):
fig.add_subplot(axes_class=Axes, polar=True)
with pytest.raises(ValueError):
fig.add_subplot(projection="3d", polar=True)
with pytest.raises(TypeError):
fig.add_subplot(projection=42)
def test_add_subplot_invalid():
fig = plt.figure()
with pytest.raises(ValueError,
match='Number of columns must be a positive integer'):
fig.add_subplot(2, 0, 1)
with pytest.raises(ValueError,
match='Number of rows must be a positive integer'):
fig.add_subplot(0, 2, 1)
with pytest.raises(ValueError, match='num must be 1 <= num <= 4'):
fig.add_subplot(2, 2, 0)
with pytest.raises(ValueError, match='num must be 1 <= num <= 4'):
fig.add_subplot(2, 2, 5)
with pytest.raises(ValueError, match='must be a three-digit integer'):
fig.add_subplot(42)
with pytest.raises(ValueError, match='must be a three-digit integer'):
fig.add_subplot(1000)
with pytest.raises(TypeError, match='takes 1 or 3 positional arguments '
'but 2 were given'):
fig.add_subplot(2, 2)
with pytest.raises(TypeError, match='takes 1 or 3 positional arguments '
'but 4 were given'):
fig.add_subplot(1, 2, 3, 4)
with pytest.raises(ValueError,
match="Number of rows must be a positive integer, "
"not '2'"):
fig.add_subplot('2', 2, 1)
with pytest.raises(ValueError,
match='Number of columns must be a positive integer, '
'not 2.0'):
fig.add_subplot(2, 2.0, 1)
_, ax = plt.subplots()
with pytest.raises(ValueError,
match='The Subplot must have been created in the '
'present figure'):
fig.add_subplot(ax)
@image_comparison(['figure_suptitle'])
def test_suptitle():
fig, _ = plt.subplots()
fig.suptitle('hello', color='r')
fig.suptitle('title', color='g', rotation='30')
def test_suptitle_fontproperties():
fig, ax = plt.subplots()
fps = mpl.font_manager.FontProperties(size='large', weight='bold')
txt = fig.suptitle('fontprops title', fontproperties=fps)
assert txt.get_fontsize() == fps.get_size_in_points()
assert txt.get_weight() == fps.get_weight()
@image_comparison(['alpha_background'],
# only test png and svg. The PDF output appears correct,
# but Ghostscript does not preserve the background color.
extensions=['png', 'svg'],
savefig_kwarg={'facecolor': (0, 1, 0.4),
'edgecolor': 'none'})
def test_alpha():
# We want an image which has a background color and an alpha of 0.4.
fig = plt.figure(figsize=[2, 1])
fig.set_facecolor((0, 1, 0.4))
fig.patch.set_alpha(0.4)
fig.patches.append(mpl.patches.CirclePolygon(
[20, 20], radius=15, alpha=0.6, facecolor='red'))
def test_too_many_figures():
with pytest.warns(RuntimeWarning):
for i in range(rcParams['figure.max_open_warning'] + 1):
plt.figure()
def test_iterability_axes_argument():
# This is a regression test for matplotlib/matplotlib#3196. If one of the
# arguments returned by _as_mpl_axes defines __getitem__ but is not
# iterable, this would raise an exception. This is because we check
# whether the arguments are iterable, and if so we try and convert them
# to a tuple. However, the ``iterable`` function returns True if
# __getitem__ is present, but some classes can define __getitem__ without
# being iterable. The tuple conversion is now done in a try...except in
# case it fails.
class MyAxes(Axes):
def __init__(self, *args, myclass=None, **kwargs):
return Axes.__init__(self, *args, **kwargs)
class MyClass:
def __getitem__(self, item):
if item != 'a':
raise ValueError("item should be a")
def _as_mpl_axes(self):
return MyAxes, {'myclass': self}
fig = plt.figure()
fig.add_subplot(1, 1, 1, projection=MyClass())
plt.close(fig)
def test_set_fig_size():
fig = plt.figure()
# check figwidth
fig.set_figwidth(5)
assert fig.get_figwidth() == 5
# check figheight
fig.set_figheight(1)
assert fig.get_figheight() == 1
# check using set_size_inches
fig.set_size_inches(2, 4)
assert fig.get_figwidth() == 2
assert fig.get_figheight() == 4
# check using tuple to first argument
fig.set_size_inches((1, 3))
assert fig.get_figwidth() == 1
assert fig.get_figheight() == 3
def test_axes_remove():
fig, axs = plt.subplots(2, 2)
axs[-1, -1].remove()
for ax in axs.ravel()[:-1]:
assert ax in fig.axes
assert axs[-1, -1] not in fig.axes
assert len(fig.axes) == 3
def test_figaspect():
w, h = plt.figaspect(np.float64(2) / np.float64(1))
assert h / w == 2
w, h = plt.figaspect(2)
assert h / w == 2
w, h = plt.figaspect(np.zeros((1, 2)))
assert h / w == 0.5
w, h = plt.figaspect(np.zeros((2, 2)))
assert h / w == 1
@pytest.mark.parametrize('which', ['both', 'major', 'minor'])
def test_autofmt_xdate(which):
date = ['3 Jan 2013', '4 Jan 2013', '5 Jan 2013', '6 Jan 2013',
'7 Jan 2013', '8 Jan 2013', '9 Jan 2013', '10 Jan 2013',
'11 Jan 2013', '12 Jan 2013', '13 Jan 2013', '14 Jan 2013']
time = ['16:44:00', '16:45:00', '16:46:00', '16:47:00', '16:48:00',
'16:49:00', '16:51:00', '16:52:00', '16:53:00', '16:55:00',
'16:56:00', '16:57:00']
angle = 60
minors = [1, 2, 3, 4, 5, 6, 7]
x = mdates.datestr2num(date)
y = mdates.datestr2num(time)
fig, ax = plt.subplots()
ax.plot(x, y)
ax.yaxis_date()
ax.xaxis_date()
ax.xaxis.set_minor_locator(AutoMinorLocator(2))
with warnings.catch_warnings():
warnings.filterwarnings(
'ignore',
'FixedFormatter should only be used together with FixedLocator')
ax.xaxis.set_minor_formatter(FixedFormatter(minors))
fig.autofmt_xdate(0.2, angle, 'right', which)
if which in ('both', 'major'):
for label in fig.axes[0].get_xticklabels(False, 'major'):
assert int(label.get_rotation()) == angle
if which in ('both', 'minor'):
for label in fig.axes[0].get_xticklabels(True, 'minor'):
assert int(label.get_rotation()) == angle
@mpl.style.context('default')
def test_change_dpi():
fig = plt.figure(figsize=(4, 4))
fig.draw_without_rendering()
assert fig.canvas.renderer.height == 400
assert fig.canvas.renderer.width == 400
fig.dpi = 50
fig.draw_without_rendering()
assert fig.canvas.renderer.height == 200
assert fig.canvas.renderer.width == 200
@pytest.mark.parametrize('width, height', [
(1, np.nan),
(-1, 1),
(np.inf, 1)
])
def test_invalid_figure_size(width, height):
with pytest.raises(ValueError):
plt.figure(figsize=(width, height))
fig = plt.figure()
with pytest.raises(ValueError):
fig.set_size_inches(width, height)
def test_invalid_figure_add_axes():
fig = plt.figure()
with pytest.raises(ValueError):
fig.add_axes((.1, .1, .5, np.nan))
with pytest.raises(TypeError, match="multiple values for argument 'rect'"):
fig.add_axes([0, 0, 1, 1], rect=[0, 0, 1, 1])
_, ax = plt.subplots()
with pytest.raises(ValueError,
match="The Axes must have been created in the present "
"figure"):
fig.add_axes(ax)
def test_subplots_shareax_loglabels():
fig, axs = plt.subplots(2, 2, sharex=True, sharey=True, squeeze=False)
for ax in axs.flat:
ax.plot([10, 20, 30], [10, 20, 30])
ax.set_yscale("log")
ax.set_xscale("log")
for ax in axs[0, :]:
assert 0 == len(ax.xaxis.get_ticklabels(which='both'))
for ax in axs[1, :]:
assert 0 < len(ax.xaxis.get_ticklabels(which='both'))
for ax in axs[:, 1]:
assert 0 == len(ax.yaxis.get_ticklabels(which='both'))
for ax in axs[:, 0]:
assert 0 < len(ax.yaxis.get_ticklabels(which='both'))
def test_savefig():
fig = plt.figure()
msg = r"savefig\(\) takes 2 positional arguments but 3 were given"
with pytest.raises(TypeError, match=msg):
fig.savefig("fname1.png", "fname2.png")
def test_savefig_warns():
fig = plt.figure()
msg = r'savefig\(\) got unexpected keyword argument "non_existent_kwarg"'
for format in ['png', 'pdf', 'svg', 'tif', 'jpg']:
with pytest.warns(cbook.MatplotlibDeprecationWarning, match=msg):
fig.savefig(io.BytesIO(), format=format, non_existent_kwarg=True)
def test_savefig_backend():
fig = plt.figure()
# Intentionally use an invalid module name.
with pytest.raises(ModuleNotFoundError, match="No module named '@absent'"):
fig.savefig("test", backend="module://@absent")
with pytest.raises(ValueError,
match="The 'pdf' backend does not support png output"):
fig.savefig("test.png", backend="pdf")
@pytest.mark.parametrize('backend', [
pytest.param('Agg', marks=[pytest.mark.backend('Agg')]),
pytest.param('Cairo', marks=[pytest.mark.backend('Cairo')]),
])
def test_savefig_pixel_ratio(backend):
fig, ax = plt.subplots()
ax.plot([1, 2, 3])
with io.BytesIO() as buf:
fig.savefig(buf, format='png')
ratio1 = Image.open(buf)
ratio1.load()
fig, ax = plt.subplots()
ax.plot([1, 2, 3])
fig.canvas._set_device_pixel_ratio(2)
with io.BytesIO() as buf:
fig.savefig(buf, format='png')
ratio2 = Image.open(buf)
ratio2.load()
assert ratio1 == ratio2
def test_figure_repr():
fig = plt.figure(figsize=(10, 20), dpi=10)
assert repr(fig) == "<Figure size 100x200 with 0 Axes>"
def test_valid_layouts():
fig = Figure(layout=None)
assert not fig.get_tight_layout()
assert not fig.get_constrained_layout()
fig = Figure(layout='tight')
assert fig.get_tight_layout()
assert not fig.get_constrained_layout()
fig = Figure(layout='constrained')
assert not fig.get_tight_layout()
assert fig.get_constrained_layout()
def test_invalid_layouts():
fig, ax = plt.subplots(constrained_layout=True)
with pytest.warns(UserWarning):
# this should warn,
fig.subplots_adjust(top=0.8)
assert not fig.get_constrained_layout()
# Using layout + (tight|constrained)_layout warns, but the former takes
# precedence.
with pytest.warns(UserWarning, match="Figure parameters 'layout' and "
"'tight_layout' cannot"):
fig = Figure(layout='tight', tight_layout=False)
assert fig.get_tight_layout()
assert not fig.get_constrained_layout()
with pytest.warns(UserWarning, match="Figure parameters 'layout' and "
"'constrained_layout' cannot"):
fig = Figure(layout='constrained', constrained_layout=False)
assert not fig.get_tight_layout()
assert fig.get_constrained_layout()
with pytest.raises(ValueError,
match="'foobar' is not a valid value for layout"):
Figure(layout='foobar')
@check_figures_equal(extensions=["png", "pdf"])
def test_add_artist(fig_test, fig_ref):
fig_test.dpi = 100
fig_ref.dpi = 100
fig_test.subplots()
l1 = plt.Line2D([.2, .7], [.7, .7], gid='l1')
l2 = plt.Line2D([.2, .7], [.8, .8], gid='l2')
r1 = plt.Circle((20, 20), 100, transform=None, gid='C1')
r2 = plt.Circle((.7, .5), .05, gid='C2')
r3 = plt.Circle((4.5, .8), .55, transform=fig_test.dpi_scale_trans,
facecolor='crimson', gid='C3')
for a in [l1, l2, r1, r2, r3]:
fig_test.add_artist(a)
l2.remove()
ax2 = fig_ref.subplots()
l1 = plt.Line2D([.2, .7], [.7, .7], transform=fig_ref.transFigure,
gid='l1', zorder=21)
r1 = plt.Circle((20, 20), 100, transform=None, clip_on=False, zorder=20,
gid='C1')
r2 = plt.Circle((.7, .5), .05, transform=fig_ref.transFigure, gid='C2',
zorder=20)
r3 = plt.Circle((4.5, .8), .55, transform=fig_ref.dpi_scale_trans,
facecolor='crimson', clip_on=False, zorder=20, gid='C3')
for a in [l1, r1, r2, r3]:
ax2.add_artist(a)
@pytest.mark.parametrize("fmt", ["png", "pdf", "ps", "eps", "svg"])
def test_fspath(fmt, tmpdir):
out = Path(tmpdir, "test.{}".format(fmt))
plt.savefig(out)
with out.open("rb") as file:
# All the supported formats include the format name (case-insensitive)
# in the first 100 bytes.
assert fmt.encode("ascii") in file.read(100).lower()
def test_tightbbox():
fig, ax = plt.subplots()
ax.set_xlim(0, 1)
t = ax.text(1., 0.5, 'This dangles over end')
renderer = fig.canvas.get_renderer()
x1Nom0 = 9.035 # inches
assert abs(t.get_tightbbox(renderer).x1 - x1Nom0 * fig.dpi) < 2
assert abs(ax.get_tightbbox(renderer).x1 - x1Nom0 * fig.dpi) < 2
assert abs(fig.get_tightbbox(renderer).x1 - x1Nom0) < 0.05
assert abs(fig.get_tightbbox(renderer).x0 - 0.679) < 0.05
# now exclude t from the tight bbox so now the bbox is quite a bit
# smaller
t.set_in_layout(False)
x1Nom = 7.333
assert abs(ax.get_tightbbox(renderer).x1 - x1Nom * fig.dpi) < 2
assert abs(fig.get_tightbbox(renderer).x1 - x1Nom) < 0.05
t.set_in_layout(True)
x1Nom = 7.333
assert abs(ax.get_tightbbox(renderer).x1 - x1Nom0 * fig.dpi) < 2
# test bbox_extra_artists method...
assert abs(ax.get_tightbbox(renderer, bbox_extra_artists=[]).x1
- x1Nom * fig.dpi) < 2
def test_axes_removal():
# Check that units can set the formatter after an Axes removal
fig, axs = plt.subplots(1, 2, sharex=True)
axs[1].remove()
axs[0].plot([datetime(2000, 1, 1), datetime(2000, 2, 1)], [0, 1])
assert isinstance(axs[0].xaxis.get_major_formatter(),
mdates.AutoDateFormatter)
# Check that manually setting the formatter, then removing Axes keeps
# the set formatter.
fig, axs = plt.subplots(1, 2, sharex=True)
axs[1].xaxis.set_major_formatter(ScalarFormatter())
axs[1].remove()
axs[0].plot([datetime(2000, 1, 1), datetime(2000, 2, 1)], [0, 1])
assert isinstance(axs[0].xaxis.get_major_formatter(),
ScalarFormatter)
def test_removed_axis():
# Simple smoke test to make sure removing a shared axis works
fig, axs = plt.subplots(2, sharex=True)
axs[0].remove()
fig.canvas.draw()
@pytest.mark.parametrize('clear_meth', ['clear', 'clf'])
def test_figure_clear(clear_meth):
# we test the following figure clearing scenarios:
fig = plt.figure()
# a) an empty figure
fig.clear()
assert fig.axes == []
# b) a figure with a single unnested axes
ax = fig.add_subplot(111)
getattr(fig, clear_meth)()
assert fig.axes == []
# c) a figure multiple unnested axes
axes = [fig.add_subplot(2, 1, i+1) for i in range(2)]
getattr(fig, clear_meth)()
assert fig.axes == []
# d) a figure with a subfigure
gs = fig.add_gridspec(ncols=2, nrows=1)
subfig = fig.add_subfigure(gs[0])
subaxes = subfig.add_subplot(111)
getattr(fig, clear_meth)()
assert subfig not in fig.subfigs
assert fig.axes == []
# e) a figure with a subfigure and a subplot
subfig = fig.add_subfigure(gs[0])
subaxes = subfig.add_subplot(111)
mainaxes = fig.add_subplot(gs[1])
# e.1) removing just the axes leaves the subplot
mainaxes.remove()
assert fig.axes == [subaxes]
# e.2) removing just the subaxes leaves the subplot
# and subfigure
mainaxes = fig.add_subplot(gs[1])
subaxes.remove()
assert fig.axes == [mainaxes]
assert subfig in fig.subfigs
# e.3) clearing the subfigure leaves the subplot
subaxes = subfig.add_subplot(111)
assert mainaxes in fig.axes
assert subaxes in fig.axes
getattr(subfig, clear_meth)()
assert subfig in fig.subfigs
assert subaxes not in subfig.axes
assert subaxes not in fig.axes
assert mainaxes in fig.axes
# e.4) clearing the whole thing
subaxes = subfig.add_subplot(111)
getattr(fig, clear_meth)()
assert fig.axes == []
assert fig.subfigs == []
# f) multiple subfigures
subfigs = [fig.add_subfigure(gs[i]) for i in [0, 1]]
subaxes = [sfig.add_subplot(111) for sfig in subfigs]
assert all(ax in fig.axes for ax in subaxes)
assert all(sfig in fig.subfigs for sfig in subfigs)
# f.1) clearing only one subfigure
getattr(subfigs[0], clear_meth)()
assert subaxes[0] not in fig.axes
assert subaxes[1] in fig.axes
assert subfigs[1] in fig.subfigs
# f.2) clearing the whole thing
getattr(subfigs[1], clear_meth)()
subfigs = [fig.add_subfigure(gs[i]) for i in [0, 1]]
subaxes = [sfig.add_subplot(111) for sfig in subfigs]
assert all(ax in fig.axes for ax in subaxes)
assert all(sfig in fig.subfigs for sfig in subfigs)
getattr(fig, clear_meth)()
assert fig.subfigs == []
assert fig.axes == []
def test_clf_not_refedined():
for klass in FigureBase.__subclasses__():
# check that subclasses do not get redefined in our Figure subclasses
assert 'clf' not in klass.__dict__
@mpl.style.context('mpl20')
def test_picking_does_not_stale():
fig, ax = plt.subplots()
col = ax.scatter([0], [0], [1000], picker=True)
fig.canvas.draw()
assert not fig.stale
mouse_event = SimpleNamespace(x=ax.bbox.x0 + ax.bbox.width / 2,
y=ax.bbox.y0 + ax.bbox.height / 2,
inaxes=ax, guiEvent=None)
fig.pick(mouse_event)
assert not fig.stale
def test_add_subplot_twotuple():
fig = plt.figure()
ax1 = fig.add_subplot(3, 2, (3, 5))
assert ax1.get_subplotspec().rowspan == range(1, 3)
assert ax1.get_subplotspec().colspan == range(0, 1)
ax2 = fig.add_subplot(3, 2, (4, 6))
assert ax2.get_subplotspec().rowspan == range(1, 3)
assert ax2.get_subplotspec().colspan == range(1, 2)
ax3 = fig.add_subplot(3, 2, (3, 6))
assert ax3.get_subplotspec().rowspan == range(1, 3)
assert ax3.get_subplotspec().colspan == range(0, 2)
ax4 = fig.add_subplot(3, 2, (4, 5))
assert ax4.get_subplotspec().rowspan == range(1, 3)
assert ax4.get_subplotspec().colspan == range(0, 2)
with pytest.raises(IndexError):
fig.add_subplot(3, 2, (6, 3))
@image_comparison(['tightbbox_box_aspect.svg'], style='mpl20',
savefig_kwarg={'bbox_inches': 'tight',
'facecolor': 'teal'},
remove_text=True)
def test_tightbbox_box_aspect():
fig = plt.figure()
gs = fig.add_gridspec(1, 2)
ax1 = fig.add_subplot(gs[0, 0])
ax2 = fig.add_subplot(gs[0, 1], projection='3d')
ax1.set_box_aspect(.5)
ax2.set_box_aspect((2, 1, 1))
@check_figures_equal(extensions=["svg", "pdf", "eps", "png"])
def test_animated_with_canvas_change(fig_test, fig_ref):
ax_ref = fig_ref.subplots()
ax_ref.plot(range(5))
ax_test = fig_test.subplots()
ax_test.plot(range(5), animated=True)
class TestSubplotMosaic:
@check_figures_equal(extensions=["png"])
@pytest.mark.parametrize(
"x", [[["A", "A", "B"], ["C", "D", "B"]], [[1, 1, 2], [3, 4, 2]]]
)
def test_basic(self, fig_test, fig_ref, x):
grid_axes = fig_test.subplot_mosaic(x)
for k, ax in grid_axes.items():
ax.set_title(k)
labels = sorted(np.unique(x))
assert len(labels) == len(grid_axes)
gs = fig_ref.add_gridspec(2, 3)
axA = fig_ref.add_subplot(gs[:1, :2])
axA.set_title(labels[0])
axB = fig_ref.add_subplot(gs[:, 2])
axB.set_title(labels[1])
axC = fig_ref.add_subplot(gs[1, 0])
axC.set_title(labels[2])
axD = fig_ref.add_subplot(gs[1, 1])
axD.set_title(labels[3])
@check_figures_equal(extensions=["png"])
def test_all_nested(self, fig_test, fig_ref):
x = [["A", "B"], ["C", "D"]]
y = [["E", "F"], ["G", "H"]]
fig_ref.set_constrained_layout(True)
fig_test.set_constrained_layout(True)
grid_axes = fig_test.subplot_mosaic([[x, y]])
for ax in grid_axes.values():
ax.set_title(ax.get_label())
gs = fig_ref.add_gridspec(1, 2)
gs_left = gs[0, 0].subgridspec(2, 2)
for j, r in enumerate(x):
for k, label in enumerate(r):
fig_ref.add_subplot(gs_left[j, k]).set_title(label)
gs_right = gs[0, 1].subgridspec(2, 2)
for j, r in enumerate(y):
for k, label in enumerate(r):
fig_ref.add_subplot(gs_right[j, k]).set_title(label)
@check_figures_equal(extensions=["png"])
def test_nested(self, fig_test, fig_ref):
fig_ref.set_constrained_layout(True)
fig_test.set_constrained_layout(True)
x = [["A", "B"], ["C", "D"]]
y = [["F"], [x]]
grid_axes = fig_test.subplot_mosaic(y)
for k, ax in grid_axes.items():
ax.set_title(k)
gs = fig_ref.add_gridspec(2, 1)
gs_n = gs[1, 0].subgridspec(2, 2)
axA = fig_ref.add_subplot(gs_n[0, 0])
axA.set_title("A")
axB = fig_ref.add_subplot(gs_n[0, 1])
axB.set_title("B")
axC = fig_ref.add_subplot(gs_n[1, 0])
axC.set_title("C")
axD = fig_ref.add_subplot(gs_n[1, 1])
axD.set_title("D")
axF = fig_ref.add_subplot(gs[0, 0])
axF.set_title("F")
@check_figures_equal(extensions=["png"])
def test_nested_tuple(self, fig_test, fig_ref):
x = [["A", "B", "B"], ["C", "C", "D"]]
xt = (("A", "B", "B"), ("C", "C", "D"))
fig_ref.subplot_mosaic([["F"], [x]])
fig_test.subplot_mosaic([["F"], [xt]])
@check_figures_equal(extensions=["png"])
@pytest.mark.parametrize(
"x, empty_sentinel",
[
([["A", None], [None, "B"]], None),
([["A", "."], [".", "B"]], "SKIP"),
([["A", 0], [0, "B"]], 0),
([[1, None], [None, 2]], None),
([[1, "."], [".", 2]], "SKIP"),
([[1, 0], [0, 2]], 0),
],
)
def test_empty(self, fig_test, fig_ref, x, empty_sentinel):
if empty_sentinel != "SKIP":
kwargs = {"empty_sentinel": empty_sentinel}
else:
kwargs = {}
grid_axes = fig_test.subplot_mosaic(x, **kwargs)
for k, ax in grid_axes.items():
ax.set_title(k)
labels = sorted(
{name for row in x for name in row} - {empty_sentinel, "."}
)
assert len(labels) == len(grid_axes)
gs = fig_ref.add_gridspec(2, 2)
axA = fig_ref.add_subplot(gs[0, 0])
axA.set_title(labels[0])
axB = fig_ref.add_subplot(gs[1, 1])
axB.set_title(labels[1])
def test_fail_list_of_str(self):
with pytest.raises(ValueError, match='must be 2D'):
plt.subplot_mosaic(['foo', 'bar'])
with pytest.raises(ValueError, match='must be 2D'):
plt.subplot_mosaic(['foo'])
@check_figures_equal(extensions=["png"])
@pytest.mark.parametrize("subplot_kw", [{}, {"projection": "polar"}, None])
def test_subplot_kw(self, fig_test, fig_ref, subplot_kw):
x = [[1, 2]]
grid_axes = fig_test.subplot_mosaic(x, subplot_kw=subplot_kw)
subplot_kw = subplot_kw or {}
gs = fig_ref.add_gridspec(1, 2)
axA = fig_ref.add_subplot(gs[0, 0], **subplot_kw)
axB = fig_ref.add_subplot(gs[0, 1], **subplot_kw)
def test_string_parser(self):
normalize = Figure._normalize_grid_string
assert normalize('ABC') == [['A', 'B', 'C']]
assert normalize('AB;CC') == [['A', 'B'], ['C', 'C']]
assert normalize('AB;CC;DE') == [['A', 'B'], ['C', 'C'], ['D', 'E']]
assert normalize("""
ABC
""") == [['A', 'B', 'C']]
assert normalize("""
AB
CC
""") == [['A', 'B'], ['C', 'C']]
assert normalize("""
AB
CC
DE
""") == [['A', 'B'], ['C', 'C'], ['D', 'E']]
@check_figures_equal(extensions=["png"])
@pytest.mark.parametrize("str_pattern",