/** Plot the world's biggest cities.  This uses the data from the basic CSV file
    at:

    https://simplemaps.com/data/world-cities
*/

use CSV.frink

cities  = CSV.parseFileWithHeader["file:/home/eliasen/builds/worldcities/worldcities.csv"]
cities.makeColumnsNumeric[["lat","lng","population","id"]]

g = new graphics
g.color[0,0,0,.1]

for [name, name1, lat, long] = cities.data
   g.fillEllipseSize[long, -lat, .5, .5]

g.show[]