Changes between Initial Version and Version 1 of Ticket #13307, comment 24


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Timestamp:
2016-10-24T16:33:46+02:00 (9 years ago)
Author:
bastiK

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  • Ticket #13307, comment 24

    initial v1  
    44> "Inner polygons must not overlap with outer polygons or touch them"
    55
    6 This is a contradiction to the statement that OSM-Multipolygons are basically OGC-Simple-Feature Multipolygons with the sole exception of touching inner rings. The OGC Multipolygon allows touching inner ring at one point, see also [file:///home/et/tmp/99-050_OpenGIS_Simple_Features_Specification_For_OLECOM_Rev_1.1.pdf this] document.
     6This is a contradiction to the statement that OSM-Multipolygons are basically OGC-Simple-Feature Multipolygons with the sole exception of touching inner rings. The OGC Multipolygon allows touching inner ring at one point, see also [http://www.opengeospatial.org/standards/sfa this] document.
    77
    88That inconsistency is not so much a problem for JOSM though: We simply don't produce a warning unless it is     unambiguously documented as an error and there is a certain community consensus and / or common sense to this decision.