Changes between Version 2 and Version 3 of GeometryCleaning


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Timestamp:
Mar 19, 2009, 7:26:32 PM (15 years ago)
Author:
pramsey
Comment:

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  • GeometryCleaning

    v2 v3  
    55 * POLYGON rings must not self-touch
    66   * The classic "bow-tie" polygon would have to be re-written as a "polygon with hole that touches once"
     7   * A figure-8 polygon would have to be re-written as a MULTIPOLYGON
     8   * Sometimes the figure-8 has one really, really small side, and it's best to just lose those
     9   * Similarly sometimes one half of the bow-tie is really small and should just be dropped
    710 * POLYGON rings should not have zero area
    811 * POLYGONs should probably not have zero area