[postgis-tickets] [PostGIS] #2163: Add st_tpi

[PostGIS]

#2163: Add st_tpi
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 Reporter:  nclay        |       Owner:  dustymugs    
     Type:  enhancement  |      Status:  new          
 Priority:  medium       |   Milestone:  PostGIS 2.1.0
Component:  raster       |     Version:  2.0.x        
 Keywords:               |  
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 Add the ability to calculate the Topographic Position Index for a DEM
 raster.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/2163>
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