Changes between Version 1 and Version 2 of TopologyExceptions


Ignore:
Timestamp:
Dec 12, 2007, 9:59:35 AM (16 years ago)
Author:
pramsey
Comment:

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  • TopologyExceptions

    v1 v2  
    11TopologyExceptions are thrown when the topological graph GEOS uses to compute relationships enters an invalid or impossible state.  There are two reasons for TopologyExceptions to be thrown:
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    3 * GEOS is handling a valid geometry case incorrectly. That is, a '''bug'''.
    4 * GEOS is handling an invalid geometry case correctly.
     3 1. GEOS is handling a valid geometry case incorrectly. That is, a '''bug'''.
     4 1. GEOS is handling an invalid geometry case correctly.
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    66Before submitting a bug ticket based on a TopologyException, ensure your geometries are valid, by running the IsValid method on them.  In PostGIS, the ST_IsValid() function calls the appropriate GEOS test.  If your geometries are invalid, the problem is with your geometry, not with GEOS.