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Python

import numpy as np
import matplotlib.pyplot as plt
from matplotlib.testing.decorators import check_figures_equal, image_comparison
@image_comparison(['spines_axes_positions'])
def test_spines_axes_positions():
# SF bug 2852168
fig = plt.figure()
x = np.linspace(0, 2*np.pi, 100)
y = 2*np.sin(x)
ax = fig.add_subplot(1, 1, 1)
ax.set_title('centered spines')
ax.plot(x, y)
ax.spines['right'].set_position(('axes', 0.1))
ax.yaxis.set_ticks_position('right')
ax.spines['top'].set_position(('axes', 0.25))
ax.xaxis.set_ticks_position('top')
ax.spines['left'].set_color('none')
ax.spines['bottom'].set_color('none')
@image_comparison(['spines_data_positions'])
def test_spines_data_positions():
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)
ax.spines['left'].set_position(('data', -1.5))
ax.spines['top'].set_position(('data', 0.5))
ax.spines['right'].set_position(('data', -0.5))
ax.spines['bottom'].set_position('zero')
ax.set_xlim([-2, 2])
ax.set_ylim([-2, 2])
@check_figures_equal(extensions=["png"])
def test_spine_nonlinear_data_positions(fig_test, fig_ref):
plt.style.use("default")
ax = fig_test.add_subplot()
ax.set(xscale="log", xlim=(.1, 1))
# Use position="data" to visually swap the left and right spines, using
# linewidth to distinguish them. The calls to tick_params removes labels
# (for image comparison purposes) and harmonizes tick positions with the
# reference).
ax.spines["left"].set_position(("data", 1))
ax.spines["left"].set_linewidth(2)
ax.spines["right"].set_position(("data", .1))
ax.tick_params(axis="y", labelleft=False, direction="in")
ax = fig_ref.add_subplot()
ax.set(xscale="log", xlim=(.1, 1))
ax.spines["right"].set_linewidth(2)
ax.tick_params(axis="y", labelleft=False, left=False, right=True)
@image_comparison(['spines_capstyle'])
def test_spines_capstyle():
# issue 2542
plt.rc('axes', linewidth=20)
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)
ax.set_xticks([])
ax.set_yticks([])
def test_label_without_ticks():
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)
plt.subplots_adjust(left=0.3, bottom=0.3)
ax.plot(np.arange(10))
ax.yaxis.set_ticks_position('left')
ax.spines['left'].set_position(('outward', 30))
ax.spines['right'].set_visible(False)
ax.set_ylabel('y label')
ax.xaxis.set_ticks_position('bottom')
ax.spines['bottom'].set_position(('outward', 30))
ax.spines['top'].set_visible(False)
ax.set_xlabel('x label')
ax.xaxis.set_ticks([])
ax.yaxis.set_ticks([])
plt.draw()
spine = ax.spines['left']
spinebbox = spine.get_transform().transform_path(
spine.get_path()).get_extents()
assert ax.yaxis.label.get_position()[0] < spinebbox.xmin, \
"Y-Axis label not left of the spine"
spine = ax.spines['bottom']
spinebbox = spine.get_transform().transform_path(
spine.get_path()).get_extents()
assert ax.xaxis.label.get_position()[1] < spinebbox.ymin, \
"X-Axis label not below the spine"