198 lines
6.9 KiB
Python
198 lines
6.9 KiB
Python
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import itertools
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import numpy as np
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import pytest
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import matplotlib.pyplot as plt
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from matplotlib.testing.decorators import image_comparison
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def check_shared(axs, x_shared, y_shared):
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"""
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x_shared and y_shared are n x n boolean matrices; entry (i, j) indicates
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whether the x (or y) axes of subplots i and j should be shared.
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"""
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for (i1, ax1), (i2, ax2), (i3, (name, shared)) in itertools.product(
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enumerate(axs),
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enumerate(axs),
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enumerate(zip("xy", [x_shared, y_shared]))):
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if i2 <= i1:
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continue
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assert \
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(getattr(axs[0], "_shared_{}_axes".format(name)).joined(ax1, ax2)
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== shared[i1, i2]), \
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"axes %i and %i incorrectly %ssharing %s axis" % (
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i1, i2, "not " if shared[i1, i2] else "", name)
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def check_visible(axs, x_visible, y_visible):
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for i, (ax, vx, vy) in enumerate(zip(axs, x_visible, y_visible)):
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for l in ax.get_xticklabels() + [ax.xaxis.offsetText]:
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assert l.get_visible() == vx, \
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f"Visibility of x axis #{i} is incorrectly {vx}"
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for l in ax.get_yticklabels() + [ax.yaxis.offsetText]:
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assert l.get_visible() == vy, \
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f"Visibility of y axis #{i} is incorrectly {vy}"
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def test_shared():
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rdim = (4, 4, 2)
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share = {
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'all': np.ones(rdim[:2], dtype=bool),
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'none': np.zeros(rdim[:2], dtype=bool),
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'row': np.array([
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[False, True, False, False],
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[True, False, False, False],
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[False, False, False, True],
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[False, False, True, False]]),
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'col': np.array([
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[False, False, True, False],
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[False, False, False, True],
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[True, False, False, False],
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[False, True, False, False]]),
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}
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visible = {
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'x': {
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'all': [False, False, True, True],
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'col': [False, False, True, True],
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'row': [True] * 4,
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'none': [True] * 4,
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False: [True] * 4,
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True: [False, False, True, True],
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},
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'y': {
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'all': [True, False, True, False],
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'col': [True] * 4,
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'row': [True, False, True, False],
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'none': [True] * 4,
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False: [True] * 4,
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True: [True, False, True, False],
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},
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}
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share[False] = share['none']
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share[True] = share['all']
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# test default
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f, ((a1, a2), (a3, a4)) = plt.subplots(2, 2)
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axs = [a1, a2, a3, a4]
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check_shared(axs, share['none'], share['none'])
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plt.close(f)
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# test all option combinations
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ops = [False, True, 'all', 'none', 'row', 'col']
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for xo in ops:
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for yo in ops:
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f, ((a1, a2), (a3, a4)) = plt.subplots(2, 2, sharex=xo, sharey=yo)
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axs = [a1, a2, a3, a4]
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check_shared(axs, share[xo], share[yo])
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check_visible(axs, visible['x'][xo], visible['y'][yo])
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plt.close(f)
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# test label_outer
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f, ((a1, a2), (a3, a4)) = plt.subplots(2, 2, sharex=True, sharey=True)
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axs = [a1, a2, a3, a4]
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for ax in axs:
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ax.label_outer()
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check_visible(axs, [False, False, True, True], [True, False, True, False])
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def test_label_outer_span():
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fig = plt.figure()
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gs = fig.add_gridspec(3, 3)
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# +---+---+---+
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# | 1 | |
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# +---+---+---+
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# | | | 3 |
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# + 2 +---+---+
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# | | 4 | |
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# +---+---+---+
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a1 = fig.add_subplot(gs[0, 0:2])
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a2 = fig.add_subplot(gs[1:3, 0])
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a3 = fig.add_subplot(gs[1, 2])
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a4 = fig.add_subplot(gs[2, 1])
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for ax in fig.axes:
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ax.label_outer()
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check_visible(
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fig.axes, [False, True, False, True], [True, True, False, False])
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def test_shared_and_moved():
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# test if sharey is on, but then tick_left is called that labels don't
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# re-appear. Seaborn does this just to be sure yaxis is on left...
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f, (a1, a2) = plt.subplots(1, 2, sharey=True)
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check_visible([a2], [True], [False])
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a2.yaxis.tick_left()
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check_visible([a2], [True], [False])
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f, (a1, a2) = plt.subplots(2, 1, sharex=True)
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check_visible([a1], [False], [True])
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a2.xaxis.tick_bottom()
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check_visible([a1], [False], [True])
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def test_exceptions():
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# TODO should this test more options?
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with pytest.raises(ValueError):
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plt.subplots(2, 2, sharex='blah')
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with pytest.raises(ValueError):
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plt.subplots(2, 2, sharey='blah')
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# We filter warnings in this test which are genuine since
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# the point of this test is to ensure that this raises.
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with pytest.warns(UserWarning, match='.*sharex argument to subplots'), \
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pytest.raises(ValueError):
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plt.subplots(2, 2, -1)
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with pytest.warns(UserWarning, match='.*sharex argument to subplots'), \
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pytest.raises(ValueError):
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plt.subplots(2, 2, 0)
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with pytest.warns(UserWarning, match='.*sharex argument to subplots'), \
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pytest.raises(ValueError):
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plt.subplots(2, 2, 5)
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@image_comparison(['subplots_offset_text'], remove_text=False)
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def test_subplots_offsettext():
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x = np.arange(0, 1e10, 1e9)
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y = np.arange(0, 100, 10)+1e4
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fig, axs = plt.subplots(2, 2, sharex='col', sharey='all')
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axs[0, 0].plot(x, x)
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axs[1, 0].plot(x, x)
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axs[0, 1].plot(y, x)
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axs[1, 1].plot(y, x)
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@pytest.mark.parametrize("top", [True, False])
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@pytest.mark.parametrize("bottom", [True, False])
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@pytest.mark.parametrize("left", [True, False])
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@pytest.mark.parametrize("right", [True, False])
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def test_subplots_hide_labels(top, bottom, left, right):
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# Ideally, we would also test offset-text visibility (and remove
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# test_subplots_offsettext), but currently, setting rcParams fails to move
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# the offset texts as well.
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with plt.rc_context({"xtick.labeltop": top, "xtick.labelbottom": bottom,
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"ytick.labelleft": left, "ytick.labelright": right}):
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axs = plt.figure().subplots(3, 3, sharex=True, sharey=True)
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for (i, j), ax in np.ndenumerate(axs):
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xtop = ax.xaxis._major_tick_kw["label2On"]
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xbottom = ax.xaxis._major_tick_kw["label1On"]
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yleft = ax.yaxis._major_tick_kw["label1On"]
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yright = ax.yaxis._major_tick_kw["label2On"]
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assert xtop == (top and i == 0)
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assert xbottom == (bottom and i == 2)
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assert yleft == (left and j == 0)
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assert yright == (right and j == 2)
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def test_get_gridspec():
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# ahem, pretty trivial, but...
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fig, ax = plt.subplots()
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assert ax.get_subplotspec().get_gridspec() == ax.get_gridspec()
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def test_dont_mutate_kwargs():
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subplot_kw = {'sharex': 'all'}
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gridspec_kw = {'width_ratios': [1, 2]}
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fig, ax = plt.subplots(1, 2, subplot_kw=subplot_kw,
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gridspec_kw=gridspec_kw)
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assert subplot_kw == {'sharex': 'all'}
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assert gridspec_kw == {'width_ratios': [1, 2]}
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