topic kernel density mapping in Conservation Questions

kernel density mapping

RyanAskren — Wed, 01 Oct 2014 21:17:57 GMT

I am attempting to construct a kernel density map of some location data we have on geese in Sasklatchewan and Alberta.

Right now it only maps the kernel density for the extent of the point layer with the coordinates. This results in a perfect square with density ellipses lopped off at the edges. How do I change the extent of a point layer?

Any one have experience making kernel density distributions that can offer some insight?

Re: kernel density mapping

larryzhang — Mon, 13 Oct 2014 10:57:37 GMT

ryan,

if understanding your issue properly, please try the following two options, when running the 'Kernal Density':

1. adjust 'Output cell size' to the smaller (saying, the half) from the default); and / or

2. reduce 'Search radius' to the half from the default

Re: kernel density mapping

Robert_LeClair — Tue, 14 Oct 2014 22:39:44 GMT

Ryan - I would go into the Geoprocessing menu -> Environment Settings and change the Processing Extent to a layer with a larger extent (i.e. county, state, etc.)

Good luck!