[postgis-devel] [PostGIS] #375: Add lwcollection_homogenize and ST_Homogenize

[PostGIS]

#375: Add lwcollection_homogenize and ST_Homogenize
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 Reporter:  colivier                               |       Owner:  colivier     
     Type:  enhancement                            |      Status:  new          
 Priority:  medium                                 |   Milestone:  PostGIS 2.0.0
Component:  postgis                                |     Version:               
 Keywords:  homogenize collection  ST_GeomFromKML  |  
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 {{{
 /*
 ** Given a generic collection, return the "simplest" form.
 **
 ** eg: GEOMETRYCOLLECTION(MULTILINESTRING()) => MULTELINESTRING()
 **     GEOMETRYCOLLECTION(MULTILINESTRING(), MULTILINESTRING(), POINT())
 **      => GEOMETRYCOLLECTION(MULTILINESTRING(), MULTIPOINT())
 **
 ** In general, if the subcomponents are homogeneous, return a properly
 ** typed collection.
 ** Otherwise, return a generic collection, with the subtypes in minimal
 ** typed collections.
 }}}


 I need this stuff for ST_GeomFromKML, to be able to return simplest
 geometry forms if KML input is mixed.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/375>
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