Using Natural Neighbor Interpolation for Transportation Demand Analysis

Discussion created by tonysalo on May 30, 2013
Latest reply on Jun 22, 2013 by tonysalo

I'm a GIS Analyst at a transportation firm and have developed a heat map model to represent bicycle and pedestrian demand. It's based on weighted point data an currently uses kernel density as the mechanism to determine "hot spots." This has worked really well but I've been experimenting with the Natural Neighbor and IDW interpolation tools. The results with these tools are not drastically different and the numerical values generating with Natural Neighbor are a lot more logical than those of Kernel density.

Has anyone used Natural Neighbor or other interpolation tools for transportation analyses? Most of what I've seen with the tools mentioned, including kernel density, have been used for surface or other environmental projects.