[postgis-devel] [PostGIS] #1698: Review polygon collapse policy in ST_Simplify

[PostGIS]

#1698: Review polygon collapse policy in ST_Simplify
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 Reporter:  strk     |       Owner:  pramsey      
     Type:  task     |      Status:  new          
 Priority:  medium   |   Milestone:  PostGIS 2.0.1
Component:  postgis  |     Version:  trunk        
 Keywords:           |  
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 Current ST_Simplify transforms collapsed polygons into EMPTY polygons, but
 that's not necessarely a good idea. The goal being generalizing features,
 _dropping_ the whole location information from them isn't really useful.

 This is really depended on use case so we may define policy parameters. A
 planar subdivision ends up having "holes" if we drop small components. But
 a central big body with a lot of satellite islands would not get
 simplified much if we keep all islands.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/1698>
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