I'm trying to simplify a group of adjacent polygons without gaps and line
overlaps forming between them. Ideally I'd like results similar to what
mapshaper produces. I've tried using gSimplify() (from rGEOS),
thinnedSpatialPoly() (from maptools), and dp() (from shapefiles) but
haven't been able to get good results. The first two have a
"topologyPreserve" argument but it only applies to single polygons. Are
there any other tools / methods for line simplification that I might try?
Thanks

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