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Replace some polar baseline images by check_figures_equal. #14888

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Merged
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Sep 3, 2019
Merged

Replace some polar baseline images by check_figures_equal. #14888

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62 changes: 38 additions & 24 deletions lib/matplotlib/tests/test_axes.py
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Original file line number Diff line number Diff line change
Expand Up @@ -634,44 +634,58 @@ def test_const_xy():
plt.plot(np.ones(10), np.ones(10), 'o')


@image_comparison(['polar_wrap_180', 'polar_wrap_360'], style='default')
def test_polar_wrap():
def test_polar_twice():
fig = plt.figure()
plt.subplot(111, polar=True)
plt.polar(np.deg2rad([179, -179]), [0.2, 0.1], "b.-")
plt.polar(np.deg2rad([179, 181]), [0.2, 0.1], "g.-")
plt.rgrids([0.05, 0.1, 0.15, 0.2, 0.25, 0.3])
plt.polar([1, 2], [.1, .2])
plt.polar([3, 4], [.3, .4])
assert len(fig.axes) == 1, 'More than one polar axes created.'

fig = plt.figure()
plt.subplot(111, polar=True)
plt.polar(np.deg2rad([2, -2]), [0.2, 0.1], "b.-")
plt.polar(np.deg2rad([2, 358]), [0.2, 0.1], "g.-")
plt.polar(np.deg2rad([358, 2]), [0.2, 0.1], "r.-")
plt.rgrids([0.05, 0.1, 0.15, 0.2, 0.25, 0.3])

@check_figures_equal()
def test_polar_wrap(fig_test, fig_ref):
ax = fig_test.add_subplot(projection="polar")
ax.plot(np.deg2rad([179, -179]), [0.2, 0.1])
ax.plot(np.deg2rad([2, -2]), [0.2, 0.1])
ax = fig_ref.add_subplot(projection="polar")
ax.plot(np.deg2rad([179, 181]), [0.2, 0.1])
ax.plot(np.deg2rad([2, 358]), [0.2, 0.1])


@image_comparison(['polar_units', 'polar_units_2'], style='default')
def test_polar_units():
@check_figures_equal()
def test_polar_units_1(fig_test, fig_ref):
import matplotlib.testing.jpl_units as units
units.register()
xs = [30.0, 45.0, 60.0, 90.0]
ys = [1.0, 2.0, 3.0, 4.0]

deg = units.deg
km = units.km
plt.figure(fig_test.number)
plt.polar([x * units.deg for x in xs], ys)

xs = [30.0*deg, 45.0*deg, 60.0*deg, 90.0*deg]
ys = [1.0, 2.0, 3.0, 4.0]
ax = fig_ref.add_subplot(projection="polar")
ax.plot(np.deg2rad(xs), ys)
ax.set(xlabel="deg")

plt.figure()
plt.polar(xs, ys, color="blue")

plt.figure()
# make sure runits and theta units work
ykm = [y*km for y in ys]
plt.polar(xs, ykm, color="blue", thetaunits="rad", runits="km")
@check_figures_equal()
def test_polar_units_2(fig_test, fig_ref):
import matplotlib.testing.jpl_units as units
units.register()
xs = [30.0, 45.0, 60.0, 90.0]
xs_deg = [x * units.deg for x in xs]
ys = [1.0, 2.0, 3.0, 4.0]
ys_km = [y * units.km for y in ys]

plt.figure(fig_test.number)
# test {theta,r}units.
plt.polar(xs_deg, ys_km, thetaunits="rad", runits="km")
assert isinstance(plt.gca().get_xaxis().get_major_formatter(),
units.UnitDblFormatter)

ax = fig_ref.add_subplot(projection="polar")
ax.plot(np.deg2rad(xs), ys)
ax.xaxis.set_major_formatter(mticker.FuncFormatter("{:.12}".format))
ax.set(xlabel="rad", ylabel="km")


@image_comparison(['polar_rmin'], style='default')
def test_polar_rmin():
Expand Down