Changes between Version 13 and Version 14 of SomeSplitting


Ignore:
Timestamp:
03/07/13 18:03:05 (12 years ago)
Author:
darkblueb
Comment:

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  • SomeSplitting

    v13 v14  
    11= Discussion of Methods and API for Splitting an Oversize Polygon =
    22
    3 * GEOS performs poorly as a POLYGON increases in number of vertices, even in the simple cases.
    43
    54* It is often desirable to "split" a POLYGON with a high number of vertices into some number of smaller POLYGONs.
    65
    76* 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.
     7
     8* GEOS performs poorly as a POLYGON increases to a very large number of vertices, even in simple cases.
    89
    910* For the sake of discussion. let us assume we are operating on a POLYGON with a single outer ring, that is formally valid.