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.
Sequential schemes are used to assign styles or attributes of layer elements to discrete ranges in a series of values that progress from low to high. They are ideal for making choropleth maps. This map shows the change in population in each Indian state from 2001 to 2011.
See also categorical schemes.