How Do Kdims Work For Polygons In Geoviews?

I'm trying to understand how the kdims work for Polygon plots in geoviews. There is a similar question here but it hasn't really been answered - GeoViews: add a slider to chlorople

Solution 1:

I think you are looking for something like (see also here: https://nbviewer.jupyter.org/github/poplarShift/pyviz-recipes/blob/master/notebooks/data_formats.ipynb)

import geoviews as gv
import geopandas as gpd
world = gpd.read_file(gpd.datasets.get_path('naturalearth_lowres'))
import holoviews as hv
hv.extension('bokeh')

hv.Dataset(world, kdims=['Longitude', 'Latitude', 'continent'], vdims='pop_est').to(gv.Polygons)