[postgis-tickets] [PostGIS] #2894: Kernel density estimation with PostGIS raster

[PostGIS]

#2894: Kernel density estimation with PostGIS raster
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 Reporter:  jpk                                          |       Owner:  pramsey
     Type:  task                                         |      Status:  new    
 Priority:  medium                                       |   Milestone:         
Component:  postgis                                      |     Version:  2.1.x  
 Keywords:  kernel density estimation, heat map, raster  |  
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 Hi everyone,

 I was looking for a PostGIS function to create a raster resulting from a
 kernel density estimation (or heat map). I did not find it so I created it
 myself in plpgsql. For the moment, it uses a quartic function (same than
 ArcGIS spatial analyst) but it is possible to implement the other ones
 (triangular, gaussian, etc). Here is the function and a example of
 execution. Feel free to use it and improve it.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/2894>
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