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Test.<BR>
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Em Dom, 2009-02-08 às 00:42 +0100, Stefan Keller escreveu:
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Hi,
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Recently there was an interesting thread about "Cleaning non valid multipolygon". The goal there was to eliminate small polygons. This is similar to ArcGIS' ELIMINATE command, see <A HREF="http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?id=1398&pid=1394&topicname=Eliminate_(Coverage">http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?id=1398&pid=1394&topicname=Eliminate_(Coverage</A>).
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Now, there is another command I remember from ArcGIS, called CLEAN (see <A HREF="http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=Clean%20(Coverage">http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=Clean%20(Coverage</A>)).
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Among other's, it (1) deletes dangling lines that are shorter than a specified dangle length, and (2) merges coordinates within a certain tolerance of each other. <BR>
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In case, someone has already resolved this using PostGIS, I'd be interested.
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-S.
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