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import pandas as pd
import geoviews as gv

from geoviews import dim

gv.extension('bokeh')

Define data



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cities = pd.read_csv('../../assets/cities.csv', encoding="ISO-8859-1")
population = gv.Dataset(cities, kdims=['City', 'Country', 'Year'])
points = population.to(gv.Points, ['Longitude', 'Latitude'], ['Population', 'City', 'Country'])

tiles = gv.tile_sources.Wikipedia

Plot



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tiles * points.opts(
    color='Population', cmap='viridis', size=dim('Population')*0.000001,
    tools=['hover'], global_extent=True, width=600, height=600)