URL: http://bokeh.pydata.org/en/latest/docs/gallery/texas.html
Most examples work across multiple plotting backends, this example is also available for:
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import holoviews as hv
from holoviews import opts
hv.extension('bokeh')
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from bokeh.sampledata.us_counties import data as counties
from bokeh.sampledata.unemployment import data as unemployment
counties = [dict(county, Unemployment=unemployment[cid])
for cid, county in counties.items()
if county["state"] == "tx"]
choropleth = hv.Polygons(counties, ['lons', 'lats'], [('detailed name', 'County'), 'Unemployment'])
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choropleth.opts(
opts.Polygons(logz=True, tools=['hover'], xaxis=None, yaxis=None,
show_grid=False, show_frame=False, width=500, height=500,
color_index='Unemployment', colorbar=True, toolbar='above', line_color='white'))