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Can you store a geographic coordinate as the numerical value in a Dual? I want to have a dimension with the airport name as the string value and the numerical value the coordinates, i.e.,
Dual(arrival_station_identifier, GeoMakePoint(arrival_station_lat, arrival_station_lon)) as arrival_station
This loads fine, but cannot be used in the map visualization. To work around it I now have to use two dimensions, one for location and one for name. Am I missing something?