Changes between Version 11 and Version 12 of SomeSplitting


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Timestamp:
Mar 7, 2013, 4:23:24 PM (11 years ago)
Author:
darkblueb
Comment:

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  • SomeSplitting

    v11 v12  
    55* It is often desirable to "split" a POLYGON with a high number of vertices into some number of smaller POLYGONs.
    66
    7 * From a user's perspective, some GIS processes result in very large POLYGON, for example 10,000 or 100,000 or more, vertices.  There is a case to be made that PostGIS users would benefit from standard calls to take a single POLYGON as an input,  and output some GEOMETRYCOLLECTION of POLYGON that are "equivalent", disregarding the problems inherent with the numeric precision model used.
     7* From a user's perspective, some GIS processes result in very large POLYGON, for example 10,000 or 100,000 or more, vertices.  There is a case to be made that PostGIS users would benefit from standard calls to take a single POLYGON as an input,  and output some GEOMETRYCOLLECTION of POLYGON that are "equivalent", while respecting the problems inherent with the numeric precision model used.
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    99* For the sake of discussion. let us assume we are operating on a POLYGON with a single outer ring, that is formally valid.