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Description
Bug report
Bug summary
TheAxis.broken_barh function takes anxranges parameter described as "The x-positions and extends of the rectangles". But if I'm plotting datetime values on the axis, it appears impossible to supply an extent value of a type that the function can deal with.
Usingdatetime.timedelta raises an exceptionAttributeError: 'datetime.timedelta' object has no attribute 'toordinal', as does using an integer. Using adatetime value causes the bar to extend too far (which I guess isn't surprising, astoordinal on a datetime willnot give a duration).
Code for reproduction
importmatplotlib.pyplotaspltfromdatetimeimportdatetime,timedeltalo=datetime.fromisoformat("2018-11-09 20:00")hi=datetime.fromisoformat("2018-11-09 22:00")fig,ax=plt.subplots()ax.set_xlim(lo,hi)ax.set_ylim(0,30)ax.broken_barh([(lo,timedelta(hours=1))], (10,20))plt.show()
Actual outcome
Traceback (most recent call last): File ".\problem.py", line 11, in <module> ax.broken_barh([(lo, timedelta(hours=1))], (10, 20)) File "C:\...\lib\site-packages\matplotlib\__init__.py", line 1810, in inner return func(ax, *args, **kwargs) File "C:\...\lib\site-packages\matplotlib\axes\_axes.py", line 2528, in broken_barh xranges = self.convert_xunits(xranges) File "C:\...\lib\site-packages\matplotlib\artist.py", line 186, in convert_xunits return ax.xaxis.convert_units(x) File "C:\...\lib\site-packages\matplotlib\axis.py", line 1530, in convert_units ret = self.converter.convert(x, self.units, self) File "C:\...\lib\site-packages\matplotlib\dates.py", line 1801, in convert return date2num(value) File "C:\...\lib\site-packages\matplotlib\dates.py", line 428, in date2num return _to_ordinalf_np_vectorized(d) File "C:\...\lib\site-packages\numpy\lib\function_base.py", line 1972, in __call__ return self._vectorize_call(func=func, args=vargs) File "C:\...\lib\site-packages\numpy\lib\function_base.py", line 2048, in _vectorize_call outputs = ufunc(*inputs) File "C:\...\lib\site-packages\matplotlib\dates.py", line 229, in _to_ordinalf base = float(dt.toordinal())AttributeError: 'datetime.timedelta' object has no attribute 'toordinal'Expected outcome
A graph showing a single bar from 20:00 to 21:00.
If this is a limitation of the current version of matplotlib, I'd be perfectly happy with a workaround that gave the expected result by another means (but the approaches I've tried have resulted in the axis tick marks not being correctly formatted as times).
Matplotlib version
- Operating system: Windows 7
- Matplotlib version: 3.0.2
- Matplotlib backend (
print(matplotlib.get_backend())): TkAgg - Python version: 3.7.1
- Jupyter version (if applicable): N/A
- Other libraries: None
Python installed from the python.org Windows 64-bit installer. Matplotlib installed from the wheel on PyPI (pipenv install matplotlib).