issues: 554785150

Dear all,

I'm trying to plot a vector with bool data. It used to work with xarray version 0.10.7 in an old setup, but it isn't working anymore. Am I doing something wrong or is there something new to consider?

I'm not hundred percent sure, if this problem is due to changes in xarray, numpy or something else

Code example

python import xarray xarray.DataArray([True, False]).plot()

Expected Output

A plot with a line from 1 to 0.

Problem Description

However, I get this error: ``` TypeError Traceback (most recent call last) <ipython-input-22-d911786d1072> in <module> ----> 1 xarray.DataArray([True, False]).plot()

~/python_venvs/python3/py3_18.04/lib/python3.6/site-packages/xarray/plot/plot.py in call(self, kwargs) 463 464 def call(self, kwargs): --> 465 return plot(self._da, **kwargs) 466 467 @functools.wraps(hist)

~/python_venvs/python3/py3_18.04/lib/python3.6/site-packages/xarray/plot/plot.py in plot(darray, row, col, col_wrap, ax, hue, rtol, subplot_kws, kwargs) 200 kwargs["ax"] = ax 201 --> 202 return plotfunc(darray, kwargs) 203 204

~/python_venvs/python3/py3_18.04/lib/python3.6/site-packages/xarray/plot/plot.py in line(darray, row, col, figsize, aspect, size, ax, hue, x, y, xincrease, yincrease, xscale, yscale, xticks, yticks, xlim, ylim, add_legend, _labels, args, kwargs) 321 yplt_val = yplt.values 322 --> 323 _ensure_plottable(xplt_val, yplt_val) 324 325 primitive = ax.plot(xplt_val, yplt_val, args, **kwargs)

~/python_venvs/python3/py3_18.04/lib/python3.6/site-packages/xarray/plot/utils.py in _ensure_plottable(*args) 510 ): 511 raise TypeError( --> 512 "Plotting requires coordinates to be numeric " 513 "or dates of type np.datetime64, " 514 "datetime.datetime, cftime.datetime or "

TypeError: Plotting requires coordinates to be numeric or dates of type np.datetime64, datetime.datetime, cftime.datetime or pd.Interval. ```

Output of xr.show_versions() in the setup that is not working

INSTALLED VERSIONS ------------------ commit: None python: 3.6.7 (default, Oct 22 2018, 11:32:17) [GCC 8.2.0] python-bits: 64 OS: Linux OS-release: 4.15.0-74-generic machine: x86_64 processor: x86_64 byteorder: little LC_ALL: None LANG: en_US.UTF-8 LOCALE: en_US.UTF-8 libhdf5: 1.10.2 libnetcdf: 4.4.1.1 xarray: 0.14.1 pandas: 0.25.3 numpy: 1.18.1 scipy: 1.2.0 netCDF4: 1.4.2 pydap: None h5netcdf: None h5py: None Nio: None zarr: None cftime: 1.0.3.4 nc_time_axis: None PseudoNetCDF: None rasterio: None cfgrib: None iris: None bottleneck: None dask: 2.9.2 distributed: None matplotlib: 3.1.2 cartopy: 0.17.0 seaborn: 0.9.0 numbagg: None setuptools: 40.6.3 pip: 20.0.1 conda: None pytest: None IPython: 7.2.0 sphinx: None

Output of xr.show_versions() in the setup that was working

INSTALLED VERSIONS ------------------ commit: None python: 3.5.2.final.0 python-bits: 64 OS: Linux OS-release: 4.4.0-169-generic machine: x86_64 processor: x86_64 byteorder: little LC_ALL: None LANG: en_US.UTF-8 LOCALE: en_US.UTF-8 xarray: 0.10.7 pandas: 0.22.0 numpy: 1.14.2 scipy: 1.0.0 netCDF4: 1.3.1 h5netcdf: None h5py: 2.6.0 Nio: None zarr: None bottleneck: None cyordereddict: None dask: 1.1.3 distributed: None matplotlib: 2.2.0 cartopy: 0.16.0 seaborn: 0.8.1 setuptools: 26.1.1 pip: 19.3.1 conda: None pytest: None IPython: 6.2.1