From 4507ae544155fb6fc9fa594faf1b8c8a23a85426 Mon Sep 17 00:00:00 2001 From: David Stansby Date: Tue, 20 Dec 2022 18:33:58 +0000 Subject: [PATCH] Allow polar scales where zero is not in valid interval --- lib/matplotlib/projections/polar.py | 17 ++++++++++++++--- lib/matplotlib/tests/test_polar.py | 7 +++++++ 2 files changed, 21 insertions(+), 3 deletions(-) diff --git a/lib/matplotlib/projections/polar.py b/lib/matplotlib/projections/polar.py index abbfd784b5f7..5f3832a21a89 100644 --- a/lib/matplotlib/projections/polar.py +++ b/lib/matplotlib/projections/polar.py @@ -422,14 +422,25 @@ def __call__(self): return [tick for tick in self.base() if tick > rorigin] return self.base() + def _zero_in_bounds(self): + """ + Return True if zero is within the valid values for the + scale of the radial axis. + """ + vmin, vmax = self._axes.yaxis._scale.limit_range_for_scale(0, 1, 1e-5) + return vmin == 0 + def nonsingular(self, vmin, vmax): # docstring inherited - return ((0, 1) if (vmin, vmax) == (-np.inf, np.inf) # Init. limits. - else self.base.nonsingular(vmin, vmax)) + if self._zero_in_bounds() and (vmin, vmax) == (-np.inf, np.inf): + # Initial view limits + return (0, 1) + else: + return self.base.nonsingular(vmin, vmax) def view_limits(self, vmin, vmax): vmin, vmax = self.base.view_limits(vmin, vmax) - if vmax > vmin: + if self._zero_in_bounds() and vmax > vmin: # this allows inverted r/y-lims vmin = min(0, vmin) return mtransforms.nonsingular(vmin, vmax) diff --git a/lib/matplotlib/tests/test_polar.py b/lib/matplotlib/tests/test_polar.py index c51508ae227a..1bde5bcc1142 100644 --- a/lib/matplotlib/tests/test_polar.py +++ b/lib/matplotlib/tests/test_polar.py @@ -291,6 +291,13 @@ def test_polar_no_data(): assert ax.get_rmin() == 0 and ax.get_rmax() == 1 +def test_polar_default_log_lims(): + plt.subplot(projection='polar') + ax = plt.gca() + ax.set_rscale('log') + assert ax.get_rmin() > 0 + + def test_polar_not_datalim_adjustable(): ax = plt.figure().add_subplot(projection="polar") with pytest.raises(ValueError): pFad - Phonifier reborn

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