[postgis-devel] [PostGIS] #902: [raster] ST_MinMax

PostGIS trac at osgeo.org
Wed Apr 27 14:00:15 PDT 2011

#902: [raster] ST_MinMax
 Reporter:  dustymugs       |       Owner:  dustymugs            
     Type:  task            |      Status:  assigned             
 Priority:  medium          |   Milestone:  PostGIS Raster Future
Component:  postgis raster  |     Version:  trunk                
 Keywords:                  |  

Comment(by dustymugs):

 Added patch (the patch for ST_Band must be applied first) that refactors
 the function in rt_api.c in preparation for calculation of additional
 stats.  As it stands, the rt_api.c function currently computes...

 1. Min/Max

 2. Mean

 3. Standard Deviation

 4. # of values used in the stats

 The rt_api.c function will also return the actual values used in the stats
 for subsequent processing, e.g. ST_Histogram and ST_Quantile.

Ticket URL: <http://trac.osgeo.org/postgis/ticket/902#comment:7>
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