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BUG: Fix text appearing far outside valid axis scale range #31061

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Merged
QuLogic merged 5 commits into from
Mar 11, 2026
+35 −0
Merged

BUG: Fix text appearing far outside valid axis scale range #31061

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4ffb8d3
Fix text appearing outside axis scale range
scottshambaugh Feb 2, 2026
20103e7
Rename to _outside_axes_domain
scottshambaugh Feb 3, 2026
371fcb2
Update lib/matplotlib/text.py
scottshambaugh Feb 25, 2026
d1bd978
Move domain check to axes
scottshambaugh Feb 25, 2026
bb9daee
Use _axis_map
scottshambaugh Mar 10, 2026
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17 changes: 17 additions & 0 deletions lib/matplotlib/artist.py
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Original file line number Diff line number Diff line change
Expand Up @@ -375,6 +375,23 @@ def get_window_extent(self, renderer=None):
"""
return Bbox([[0, 0], [0, 0]])

def _outside_axes_domain(self, x, y):
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"""
Check if the data point (x, y) is outside the valid domain of the axes
scales.

Returns True if the artist is in an Axes but the point is outside its
data range (eg. negative coordinates with a log scale).
"""
ax = self.axes
if ax is None:
return False
for val, axis in [(x, ax.xaxis), (y, ax.yaxis)]:
vmin, vmax = axis.limit_range_for_scale(val, val)
if vmin != val or vmax != val:
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return True
return False

def get_tightbbox(self, renderer=None):
"""
Get the artist's bounding box in display space, taking clipping into account.
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12 changes: 12 additions & 0 deletions lib/matplotlib/tests/test_text.py
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Expand Up @@ -1226,3 +1226,15 @@ def test_ytick_rotation_mode():
tick.set_rotation(angle)

plt.subplots_adjust(left=0.4, right=0.6, top=.99, bottom=.01)


def test_text_tightbbox_outside_scale_domain():
# Test that text at positions outside the valid domain of axes scales
# (e.g., negative coordinates with log scale) returns a null bbox.
fig, ax = plt.subplots()
ax.set_yscale('log')
ax.set_ylim(1, 100)

invalid_text = ax.text(0, -5, 'invalid')
invalid_bbox = invalid_text.get_tightbbox(fig.canvas.get_renderer())
assert not np.isfinite(invalid_bbox.width)
8 changes: 8 additions & 0 deletions lib/matplotlib/text.py
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Expand Up @@ -1060,6 +1060,14 @@ def get_window_extent(self, renderer=None, dpi=None):
bbox = bbox.translated(x, y)
return bbox

def get_tightbbox(self, renderer=None):
# Exclude text at data coordinates outside the valid domain of the axes
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# scales (e.g., negative coordinates with a log scale).
if (self._outside_axes_domain(*self.get_unitless_position())
and self.get_transform() == self.axes.transData):
return Bbox.null()
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return super().get_tightbbox(renderer)

def set_backgroundcolor(self, color):
"""
Set the background color of the text.
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