Nathan Edgars II <[email protected]> writes: > On Thu, Sep 30, 2010 at 9:52 PM, Greg Troxel <[email protected]> wrote: >> I think you two might be talking past each other. >> >> I am slightly fuzzy on multipolygons, but I think the notion is that a >> multipolygon has a number of outer rings, and a number of inner rings, >> and it defines the area that consists of points within an outer ring and >> not within an inner ring. >> >> So in the national forest/inholdings case, I think you have a polygon >> (closed way) that is the boundary (typically drawn strongly on a >> traditional topo), labeled as the forest boundary. Then you have a >> polygon for each inholding, with no particular tags required. And then >> a multipolygon with the forest boundary as outer and all the inholdings >> as inner. > > Bloody hell, I know this. The problem is that some of the inholdings > touch the boundary, so they're actually outer ways (and the portion of > the boundary there is nothing): > http://www.openstreetmap.org/?lat=28.99352&lon=-81.64891&zoom=15&layers=M&relation=1202373 > Yet the boundary is still something official.
So perhaps our definition of multipolygon is slightly off, and a containd polygon that is tangent should still be inner. Are you happy with the rendering now? It looks like it matches what you've described.
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