AttributeError: 'GeoAxesSubplot' object has no attribute '_autoscaleXon'

[AlxLhrNc]

Description

While trying to make a map, this triggered an error and wont produce any output.

Code to reproduce

import xarray as xr, numpy as np, matpyplot as plt
import cartopy.crs as ccrs
import cartopy.feature as cfeature

def map_raster(data_nc, vmin=None, vmax=None,
               legend = '',
               cmap = 'viridis'):

        if vmin==None:
            vmin = np.nanmin(data_nc)
        if vmax==None:
            vmax = np.nanmax(data_nc)

        fig, mppng = plt.subplots(subplot_kw=dict(projection=proj))

        mppng.set_extent([min(ur_lon_mp, ll_lon_mp), max(ur_lon_mp, ll_lon_mp),
                          min(ll_lat_mp, ur_lat_mp), max(ll_lat_mp, ur_lat_mp)],
                         crs = proj
                         )

        lnd = cfeature.GSHHSFeature(scale='full')
        mppng.add_feature(lnd, facecolor = 'darkgray',
                          edgecolor = 'black', linewidth = .5,
                          zorder = 2)

        var_raster = mppng.pcolormesh(data_nc.lon, data_nc.lat,
                                      data_nc.squeeze(), cmap=cmap,
                                      vmin=vmin, vmax=vmax,
                                      transform=ccrs.PlateCarree())

        plt.close()
        plt.close()

        return fig
var = xr.open_dataset('file.nc')
map_raster(var)

Traceback

Traceback (most recent call last):

  File ~\Scripts\Python\training\training_cartopy.py:220
    map_raster(chla)

  File ~\Scripts\Python\training\training_cartopy.py:193 in map_raster
    var_raster = mppng.pcolormesh(data_nc.lon, data_nc.lat,

  File ~\Installed_Programs\Anaconda3\envs\prj\lib\site-packages\cartopy\mpl\geoaxes.py:318 in wrapper
    return func(self, *args, **kwargs)

  File ~\Installed_Programs\Anaconda3\envs\prj\lib\site-packages\cartopy\mpl\geoaxes.py:1804 in pcolormesh
    self.autoscale_view()

  File ~\Installed_Programs\Anaconda3\envs\prj\lib\site-packages\cartopy\mpl\geoaxes.py:946 in autoscale_view
    if scalex and self._autoscaleXon:

AttributeError: 'GeoAxesSubplot' object has no attribute '_autoscaleXon'

Full environment definition

Operating system

Windows 10

Cartopy version

cartopy 0.20.2

conda list

 (prj) C:\Users\AlxndrLhr>conda list cartopy
# packages in environment at C:\Users\AlxndrLhr\Installed_Programs\Anaconda3\envs\prj:
#
# Name                    Version                   Build  Channel
cartopy                   0.20.2           py39h07f1d72_4    conda-forge
matplotlib                3.6.0            py39hcbf5309_0    conda-forge
numpy                     1.23.3           py39h9061af7_0    conda-forge
xarray                    2022.6.0           pyhd8ed1ab_1    conda-forge

pip list

[dopplershift]

What version of CartoPy do you have installed? This is triggered by matplotlib 3.6, and was fixed by the CartoPy 0.21 release.

[AlxLhrNc]

I have 0.20.2 (see above in full environment def). I tried to update using conda update cartopy and conda update matplotlib as I've found the issue can come from that, to no avail. Honestly don't know what to do

[dopplershift]

Ah, missed that environment. Try:
conda install cartopy=0.21

[AlxLhrNc]

Tried it, turns out gdal create conflicts with cartopy 0.21 so i'll reinstall everything properly except gdal and get back to you

[akrherz]

@AlxndrLhr just downgrade matplotlib to 3.5.2 and then you don't need the newer cartopy and the GDAL stack dependency issues currently within conda-forge.

[AlxLhrNc]

Thanks @akrherz, the downgrading did the trick. Hope you all have a good day.

[xcmonline]

Ah, missed that environment. Try: conda install cartopy=0.21

pip install --upgrade cartopy
hit: “geos_c.h”: No such file or directory

cartopy version 0.21.0
os windows 10

[vijaykumarsagar]

Ah, missed that environment. Try: conda install cartopy=0.21

pip install --upgrade cartopy hit: “geos_c.h”: No such file or directory

cartopy version 0.21.0 os windows 10

Thank you. "pip install --upgrade cartopy" has solved my problem.

[huangsiyr]

Tried it, turns out gdal create conflicts with cartopy 0.21 so i'll reinstall everything properly except gdal and get back to you

hello, can you show me how to downscaling matplotlib3.6 to matplotlib 3.5 with cartopy 0.19?

[rmDL4SON]

matplotlib 3.4.2
Cartopy 0.21.1

same issue suing above versions.

[QuLogic]

Then you are not truly using 0.21.1 (wrong environment?) because the string _autoscaleXon does not exist anywhere in that version.