Bryan Keith wrote:
Hello,
I'm using BuildPolygonFromEdges in ogr in an attempt to take some lines
and convert them to polygons. For a number of my sets of lines
BuildPolygonFromEdges fails. I think this is because the lines aren't
closed. Is there a way to put a tolerance into BuildPolygonFromEdges so
that nodes within the tolerance are considered coincident?
Or is there another tool that will do what I want? I used to use ArcInfo
CLEAN to do this, but I don't have access to that tool. I'm open to any
suggestions, not just gdal/ogr tools. Thank you.
Bryan,
GRASS has support for building a polygon topology from various input.
I think v.clean is the key command though I am not too familiar with it.
BuildPolygonsFromEdges() is primarily intended for already clean input
data - primarily for polygon assemble from topological formats.
Best regards,
--
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I set the clouds in motion - turn up | Frank Warmerdam, [email protected]
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and watch the world go round - Rush | Geospatial Programmer for Rent
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