Hei, I added two new tools that should be available in tomorrows nightly build:
I) A tool that extracts boundaries as linestrings from polygon tesselations and classifies the boundaries either as shared or non-shared => to find in /tools/edit geometry/convert II) Based on the previous tools and several other functions* I was able to write a function that simplifies the outline of polygons part of a tesselation. However, too strong tolerance values may destroy the topology of the resulting polygon coverages. Therefore I recommend to simplify iteratively, i.e. to apply (the same) small value several times (if this makes sense - because I am not sure how the D-P simplify algo acts if applied several times - or to increase the value with every run - but here I am not sure what happens then with the overall simplification tolerance ). => to find in /tools/generalization/ happy testing stefan *) it is quite interesting to see that a couple of new functions, which have been added this year, are heavily building on existing topology functions added a while ago (i.e. simplify polygon coverage and two-layer intersection are build on the polygonizer and planar graph stuff). Seems like OJ may have an advantage in vector analysis compared to other FOS desktop GIS if we can keep going that way ;) [provided the time is found] ------------------------------------------------------------------------------ _______________________________________________ Jump-pilot-devel mailing list Jump-pilot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
