Read about the cartography driving this javascript map layer here.
Update! We have just presented the theory and methods that drive our Canvas Flowmap Javascript Layer at the 2017 North American Cartographic Information Society in Montréal this past month (October 2017). Here's a video of our presentation if you're interested.
This Canvas-Flowmap-Layer is an extension of the ArcGIS API for JavaScript (Esri JSAPI) for the purpose of mapping the flow of objects from an origin point to a destination point by using a Bezier curve. It was created in collaboration Esri colleague, Jacob Wasilkowski. Since creating this JavaScript layer, Jacob and I started a geo-viz collaboration website, that you can find here.
This is a screengrab of the prototype created for creating a logistical mapping solution. The cartographic issue is the very common logistical flowline mapping without a widely accepted common mapping method or solution. This method maps Bezier curves from the start points to the end points using a combination of the ArcGIS JS API and drawing to the canvas. My project partner Jacob Wasilkowski and I were able to apply a more sophisticated version of this in an actual implementation. We are currently working on a soon-to-be public repo that will be available on GitHub. More background on the origination and science that is driving this method to come.
