With mpl <3.7 this code works the code snippet below works but it is broken in 3.7.0 and 3.7.1. The odd thing is that if I move the colorbar to the last line or if I don't use pandas to the the C plotting it works just fine. I guess there is a bad interaction somewhere that is messing up with the subplots.
import matplotlib.pyplot as plt
import pandas as pd
fig = plt.figure()
axes = fig.subplot_mosaic(
"""
AB
CC
"""
)
x = [1, 2, 3]
y = [1, 2, 3]
cs0 = axes["A"].scatter(x, y)
cs1 = axes["B"].scatter(x, y)
fig.colorbar(cs0, ax=[axes["A"], axes["B"]], location="right")
axes["C"].plot(x)
pd.DataFrame(x).plot(ax=axes["C"])AttributeError Traceback (most recent call last)
Cell In[10], line 21
19 fig.colorbar(cs0, ax=[axes["A"], axes["B"]], location="right")
20 axes["C"].plot(x)
---> 21 pd.DataFrame(x).plot(ax=axes["C"])
22 # fig.colorbar(cs0, ax=[axes["A"], axes["B"]], location="right")
File ~/micromamba/envs/TEST/lib/python3.11/site-packages/pandas/plotting/_core.py:1000, in PlotAccessor.__call__(self, *args, **kwargs)
997 label_name = label_kw or data.columns
998 data.columns = label_name
-> 1000 return plot_backend.plot(data, kind=kind, **kwargs)
File ~/micromamba/envs/TEST/lib/python3.11/site-packages/pandas/plotting/_matplotlib/__init__.py:71, in plot(data, kind, **kwargs)
69 kwargs["ax"] = getattr(ax, "left_ax", ax)
70 plot_obj = PLOT_CLASSES[kind](data, **kwargs)
---> 71 plot_obj.generate()
72 plot_obj.draw()
73 return plot_obj.result
File ~/micromamba/envs/TEST/lib/python3.11/site-packages/pandas/plotting/_matplotlib/core.py:455, in MPLPlot.generate(self)
453 self._add_table()
454 self._make_legend()
--> 455 self._adorn_subplots()
457 for ax in self.axes:
458 self._post_plot_logic_common(ax, self.data)
File ~/micromamba/envs/TEST/lib/python3.11/site-packages/pandas/plotting/_matplotlib/core.py:679, in MPLPlot._adorn_subplots(self)
677 all_axes = self._get_subplots()
678 nrows, ncols = self._get_axes_layout()
--> 679 handle_shared_axes(
680 axarr=all_axes,
681 nplots=len(all_axes),
682 naxes=nrows * ncols,
683 nrows=nrows,
684 ncols=ncols,
685 sharex=self.sharex,
686 sharey=self.sharey,
687 )
689 for ax in self.axes:
690 ax = getattr(ax, "right_ax", ax)
File ~/micromamba/envs/TEST/lib/python3.11/site-packages/pandas/plotting/_matplotlib/tools.py:410, in handle_shared_axes(axarr, nplots, naxes, nrows, ncols, sharex, sharey)
408 layout = np.zeros((nrows + 1, ncols + 1), dtype=np.bool_)
409 for ax in axarr:
--> 410 layout[row_num(ax), col_num(ax)] = ax.get_visible()
412 for ax in axarr:
413 # only the last row of subplots should get x labels -> all
414 # other off layout handles the case that the subplot is
415 # the last in the column, because below is no subplot/gap.
416 if not layout[row_num(ax) + 1, col_num(ax)]:
File ~/micromamba/envs/TEST/lib/python3.11/site-packages/pandas/plotting/_matplotlib/tools.py:396, in handle_shared_axes.<locals>.<lambda>(x)
386 def handle_shared_axes(
387 axarr: Iterable[Axes],
388 nplots: int,
(...)
393 sharey: bool,
394 ):
395 if nplots > 1:
--> 396 row_num = lambda x: x.get_subplotspec().rowspan.start
397 col_num = lambda x: x.get_subplotspec().colspan.start
399 if compat.mpl_ge_3_4_0():
AttributeError: 'NoneType' object has no attribute 'rowspan'
Bug summary
With mpl <3.7 this code works the code snippet below works but it is broken in 3.7.0 and 3.7.1. The odd thing is that if I move the colorbar to the last line or if I don't use pandas to the the
Cplotting it works just fine. I guess there is a bad interaction somewhere that is messing up with the subplots.Code for reproduction
Actual outcome
Expected outcome
Additional information
No response
Operating system
No response
Matplotlib Version
3.7.0 and 3.7.1
Matplotlib Backend
module://matplotlib_inline.backend_inline
Python version
3.11
Jupyter version
6.5.3
Installation
conda