Animated Flow Mapping

The Canvas Flowmap Layer is a library for the ArcGIS JavaScript API which allows you to map objects flowing from one location to another.You can see the Canvas Flowmap Layer in action on this demo, which uses the library to add animated flow lines to a world map.

The library uses Bezier curves to visualize the movement of objects from one location to another. One purpose of using Bezier curves is that you can show the direction of flow by using either a convex or concave curve on your flow line. The direction of flow is also visualized by the library with animated dots which travel along the flow map lines in the direction of flow.

The library allows you to adjust the speed of the animated flow dots and provides options to use linear, ease-out or ease-in animations.