topic Raster Smoothing in Data Management Questions

Raster Smoothing

MikeWissner — Thu, 10 May 2012 18:38:39 GMT

Hello All,

I have a raster with hard edges that I'm trying to smooth into a more traditional "heat map" symbology. I have tried the Filter tool, but that did not produce the desired results. Any suggestions as to how to generalize this raster into a heat map without point data?

thanks,
mike

Re: Raster Smoothing

EricRice — Fri, 11 May 2012 19:11:06 GMT

Greetings,

The image on the left appears to have been created with Point Density, and the image on the right with Kernel Density. Kernel Density uses kernel function to fit a smoothly tapered surface to each input point or polyline, typically resulting in a more visually appealing outcome. If all you are concerned about at this point is the representation, you can try running the Focal Statistics tool with a medium window size and get the Mean statistic. This is going to mess up the real density values obviously so beware.

Filter is using a 3x3 window size, so you'll want to go bigger than that when using Focal Statistics.

Eric

Re: Raster Smoothing

Anonymous User — Mon, 14 May 2012 13:21:34 GMT

Original User: mikeLwiss

Thank you Eric,

Focal Statistics did exactly what I was looking for.

much appreciated, mike