Changes between Version 35 and Version 36 of CLC Join


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Timestamp:
Jun 1, 2010 12:19:46 PM (15 years ago)
Author:
cedric
Comment:

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  • CLC Join

    v35 v36  
    6363[[Image(source:data/Docs/trac/coupure des couvertures anthropisées.png,600px)]]  [[BR]] 
    6464== Grouping the surface by gid and code_00 == 
    65 The next steps is to group the different layers  
     65The next steps is to group the different layers, we use the ''' ST_Multi(ST_Collect(()) ''' function to group the POLYGONS into MULTIPOLYGONS (one per line) and before this we do the reverse by transforming all MUTIPOLYGONS into POLYGONS using ''' ST_Dump() '''.