This is somewhat off-topic for mkgmap, but I was thinking that perhaps
WanMil or someone else has worked on something similar.
I got some boundary data. I converted a tiny part of it from Spatialite
to *.osm polygons with a self-made Perl script. There were some errors
in the data, such as nodes very close to each other, or some boundary
had one point less than the adjacent boundary. I fixed these in JOSM, by
merging the too close nodes, or adding the missing nodes to boundaries.
Already this was a considerable amount of work, because JOSM seems to
lack a validator test for "nodes too close to each other" when they
belong to different ways.
Now, the next step would be to split these polygons (circular ways) to
boundary relations. Each polygon would have to be split to way segments,
and duplicate way segments should be removed. Then, relations should be
formed from the way segments for each area. Is there any software or
algorithm for doing this?
Best regards,
Marko
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