diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
index 00cc9ee7aa4a..08dfb51b0705 100644
--- a/lib/matplotlib/axes/_base.py
+++ b/lib/matplotlib/axes/_base.py
@@ -3803,7 +3803,7 @@ def format_deltas(key, dx, dy):
dy = dy / abs(dy) * abs(dx)
else:
dx = dx / abs(dx) * abs(dy)
- return (dx, dy)
+ return dx, dy
p = self._pan_start
dx = x - p.x
@@ -3812,29 +3812,30 @@ def format_deltas(key, dx, dy):
return
if button == 1:
dx, dy = format_deltas(key, dx, dy)
- result = p.bbox.translated(-dx, -dy) \
- .transformed(p.trans_inverse)
+ result = p.bbox.translated(-dx, -dy).transformed(p.trans_inverse)
elif button == 3:
try:
- dx = -dx / float(self.bbox.width)
- dy = -dy / float(self.bbox.height)
+ dx = -dx / self.bbox.width
+ dy = -dy / self.bbox.height
dx, dy = format_deltas(key, dx, dy)
if self.get_aspect() != 'auto':
- dx = 0.5 * (dx + dy)
- dy = dx
-
+ dx = dy = 0.5 * (dx + dy)
alpha = np.power(10.0, (dx, dy))
start = np.array([p.x, p.y])
oldpoints = p.lim.transformed(p.trans)
newpoints = start + alpha * (oldpoints - start)
- result = mtransforms.Bbox(newpoints) \
- .transformed(p.trans_inverse)
+ result = (mtransforms.Bbox(newpoints)
+ .transformed(p.trans_inverse))
except OverflowError:
warnings.warn('Overflow while panning')
return
- self.set_xlim(*result.intervalx)
- self.set_ylim(*result.intervaly)
+ valid = np.isfinite(result.transformed(p.trans))
+ points = result.get_points().astype(object)
+ # Just ignore invalid limits (typically, underflow in log-scale).
+ points[~valid] = None
+ self.set_xlim(points[:, 0])
+ self.set_ylim(points[:, 1])
@cbook.deprecated("2.1")
def get_cursor_props(self):
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