Hi Stefan, Did you try the planar graph plugin. Last time I had such a problem, I created a planar graph from my polygon layer, simplified the resulting edge layer created a new planar graph (or polygonize) from the simplified edges layer.
Otherwise, to create linestrings from linesegments, use linemerge (I think I added an option to union or union by attribute to merge linesegments if needed) Michaël Stefan Steiniger a écrit : > Hei, > > Today I started some work on analysing and later generalising (i.e. > simplification) of polygon layers where the polygons form a mosaic > (tesselation). So any operation on the boundaries requires that > topologic neighbourhood must be observed. I.e. to simplify an outline I > need to simplify the common boundary of two polygons. > > I have now written a "polygon neighborhood graph" and try now to extract > the common boundary. Unfortunately the Jts intersection command results > in linestrings that are rather line segments. So I need to paste them > together again. Does anybody knows a function for that? > > I tested union, and it seems to create again a MultiLineStrings instead > of a unified line. The only tool that comes to my mind so far is Larry's > /ISA's "blend lines". > > Any other suggestions? > > Stefan > > ------------------------------------------------------------------------- > Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW! > Studies have shown that voting for your favorite open source project, > along with a healthy diet, reduces your potential for chronic lameness > and boredom. Vote Now at http://www.sourceforge.net/community/cca08 > _______________________________________________ > Jump-pilot-devel mailing list > Jump-pilot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > > > ------------------------------------------------------------------------- Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW! Studies have shown that voting for your favorite open source project, along with a healthy diet, reduces your potential for chronic lameness and boredom. Vote Now at http://www.sourceforge.net/community/cca08 _______________________________________________ Jump-pilot-devel mailing list Jump-pilot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
