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Bug summary
Hello,
the matplotlib handling of missing values has changed in between versions 3.5.2 and 3.2.1.
If one provides a numpy array withnp.nan to the matplotlib functionerrorbar, one would receive an exception in the newest tag, instead of a plot with missing values like in the earlier versions.
The text of exception is misleading, because it does not say anything about NaN values.
Preferable handling of NaNs is to skip the point as it was before.
Code for reproduction
importnumpyasnpimportmatplotlib.pyplotaspltfig,ax=plt.subplots(1,1)centers= [0.75,1.25,1.75,2.25,2.75,3.25,4.0]values=np.array([3.85112844e-03,1.97134719e-02,7.62180268e-02,-8.40533060e+00,np.nan,np.nan,-0.00000000e+00])errors=np.array([9.92596526e-04,3.54076042e-03,2.44678382e-01,1.66428811e+02,np.nan,np.nan,0.00000000e+00])ax.errorbar(centers,values,errors)
Actual outcome
ax.errorbar(bin_centers, File "/cvmfs/belle.cern.ch/el7/externals/v01-11-00/Linux_x86_64/common/lib/python3.8/site-packages/matplotlib/__init__.py", line 1412, in inner return func(ax, *map(sanitize_sequence, args), **kwargs) File "/cvmfs/belle.cern.ch/el7/externals/v01-11-00/Linux_x86_64/common/lib/python3.8/site-packages/matplotlib/axes/_axes.py", line 3467, in errorbar barcols.append(lines_func( File "/cvmfs/belle.cern.ch/el7/externals/v01-11-00/Linux_x86_64/common/lib/python3.8/site-packages/matplotlib/__init__.py", line 1412, in inner return func(ax, *map(sanitize_sequence, args), **kwargs) File "/cvmfs/belle.cern.ch/el7/externals/v01-11-00/Linux_x86_64/common/lib/python3.8/site-packages/matplotlib/axes/_axes.py", line 1063, in hlines minx = min(xmin.min(), xmax.min()) File "/cvmfs/belle.cern.ch/el7/externals/v01-11-00/Linux_x86_64/common/lib/python3.8/site-packages/numpy/ma/core.py", line 5700, in min result = self.filled(fill_value).min( File "/cvmfs/belle.cern.ch/el7/externals/v01-11-00/Linux_x86_64/common/lib/python3.8/site-packages/numpy/core/_methods.py", line 43, in _amin return umr_minimum(a, axis, None, out, keepdims, initial, where)TypeError: '<=' not supported between instances of 'float' and 'str'Expected outcome
A plot with missing points
Additional information
No response
Operating system
Ubuntu
Matplotlib Version
3.5.2
Matplotlib Backend
TkAgg
Python version
Python 3.8.8
Jupyter version
3.1.2
Installation
pip
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