In Swiftmap, schemes provide an interface for mapping attributes of your data to visual attributes. Typically, you will use a scheme to create a thematic map, such as a choropleth map.
Categorical schemes are used to assign styles or attributes of layer elements, such as polygons’ fill color, to non-numerical categories of data, such as political parties in an election.
See also sequential schemes.
This map shows the results of the Andhra Pradesh 2014 assembly election. The data was downloaded from Lok Dhaba. Citation: Francesca R. Jensenius and Gilles Verniers (2017). *”Studying Indian Politics with Large-scale Data: Indian Election Data 1961–Today.”* Studies in Indian Politics, Vol 5, Issue 2, pp. 269-275.