species distribution: ImportError: Geographic projection support requires: geoviews.

[byandell]

I got stumped in notebook 33 trying to do hvplot with Mercator projection. The error message was
ImportError: Geographic projection support requires: geoviews.
Is geoviews installed in the docker image? and is it current? I don't know how to check. See
https://github.com/earthlab-education/species-distribution-coding-challenge-byandell/blob/main/notebooks/species-distribution-33-plot.ipynb

Python code:

Get month names

import calendar

Libraries for Dynamic mapping

import cartopy.crs as ccrs
import hvplot.pandas
import panel as pn

Simplify the geometry to speed up processing

ecoregions_gdf.geometry = ecoregions_gdf.simplify(
.05, preserve_topology=False)

Change the CRS to Mercator for mapping

ecoregions_gdf = ecoregions_gdf.to_crs(ccrs.Mercator())

Check that the plot runs

ecoregions_gdf.hvplot(geo=True, crs=ccrs.Mercator())

---

Error message

ImportError Traceback (most recent call last)
Cell In[30], line 1
----> 1 ecoregions_gdf.hvplot(geo=True, crs=ccrs.Mercator())

File /opt/conda/lib/python3.10/site-packages/hvplot/plotting/core.py:92, in hvPlotBase.call(self, x, y, kind, **kwds)
89 plot = self._get_converter(x, y, kind, **kwds)(kind, x, y)
90 return pn.panel(plot, **panel_dict)
---> 92 return self._get_converter(x, y, kind, **kwds)(kind, x, y)

File /opt/conda/lib/python3.10/site-packages/hvplot/plotting/core.py:99, in hvPlotBase._get_converter(self, x, y, kind, **kwds)
97 y = y or params.pop("y", None)
98 kind = kind or params.pop("kind", None)
---> 99 return HoloViewsConverter(self._data, x, y, kind=kind, **params)

File /opt/conda/lib/python3.10/site-packages/hvplot/converter.py:401, in HoloViewsConverter.init(self, data, x, y, kind, by, use_index, group_label, value_label, backlog, persist, use_dask, crs, fields, groupby, dynamic, grid, legend, rot, title, xlim, ylim, clim, symmetric, logx, logy, loglog, hover, subplots, label, invert, stacked, colorbar, datashade, rasterize, row, col, debug, framewise, aggregator, projection, global_extent, geo, precompute, flip_xaxis, flip_yaxis, dynspread, hover_cols, x_sampling, y_sampling, project, tools, attr_labels, coastline, tiles, sort_date, check_symmetric_max, transforms, stream, cnorm, features, rescale_discrete_levels, **kwds)
399 self.dynamic = dynamic
400 self.geo = any([geo, crs, global_extent, projection, project, coastline, features, tiles])
--> 401 self.crs = self._process_crs(data, crs) if self.geo else None
402 self.project = project
403 self.coastline = coastline

File /opt/conda/lib/python3.10/site-packages/hvplot/converter.py:662, in HoloViewsConverter._process_crs(self, data, crs)
659 _crs = getattr(data, 'attrs', {}).get(crs or 'crs', crs)
661 try:
...
--> 248 raise ImportError(f'Geographic projection support requires: {", ".join(missing)}.')
250 if crs is None:
251 return ccrs.PlateCarree()

ImportError: Geographic projection support requires: geoviews.
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