Sounds like a user error and not a bug. Can I mark the bug report as closed?
The Sunburned Surveyor On Mon, Mar 22, 2010 at 9:09 AM, Martin Davis <[email protected]> wrote: > That's exactly right, Michael. > > Also see D7 in the FAQ here: > http://tsusiatsoftware.net/jts/jts-faq/jts-faq.html > > > Michaël Michaud wrote: >> Hi, >> >> I don't understand what is the exact sequence of operations, but I think >> that performing difference/union operations using layers which are not >> noded together and floating point coordinates will most likely give >> micro slivers and micro-holes. >> It happens, for example, because intersection points are added in >> resulting geometries, but not in source geometries which is let unmodified. >> I think that overlay, on the other hand, adds nodes on both layers so >> that this kind of problem can be avoided. >> >> my 2 cents >> >> Michaël >> >> >> Stefan Steiniger a écrit : >> >>> Hei, just saw that bug report. >>> stefan >>> ======== >>> >>> http://sourceforge.net/tracker/?func=detail&aid=2962200&group_id=118054&atid=679906 >>> >>> >>> >>> >>> I've been able to re-create this error in JUMP using the attached files. >>> Using the Source feature, I difference each of the Difference features >>> from >>> it individually. What I'm left with is an almost correct result. There >>> are very small slivers remaining in the differenced area that >>> shouldn't be >>> there. I confirmed this by unioning the Difference features together and >>> comparing the results. The union result of the Difference features has no >>> interior rings at or near the sliver areas. (POLYGON >>> ((-112.50350053191575 41.07440586524802, -112.50350053191733 >>> 41.07440586524762, -112.503799 41.074331, -112.50350053191575 >>> 41.07440586524802)) >>> ------------------------------------------------------------------------ >>> >>> ------------------------------------------------------------------------------ >>> Download Intel® Parallel Studio Eval >>> Try the new software tools for yourself. Speed compiling, find bugs >>> proactively, and fine-tune applications for parallel performance. >>> See why Intel Parallel Studio got high marks during beta. >>> http://p.sf.net/sfu/intel-sw-dev >>> ------------------------------------------------------------------------ >>> >>> _______________________________________________ >>> Jump-pilot-devel mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel >>> >>> >> >> >> ------------------------------------------------------------------------------ >> Download Intel® Parallel Studio Eval >> Try the new software tools for yourself. Speed compiling, find bugs >> proactively, and fine-tune applications for parallel performance. >> See why Intel Parallel Studio got high marks during beta. >> http://p.sf.net/sfu/intel-sw-dev >> _______________________________________________ >> Jump-pilot-devel mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel >> >> > > -- > Martin Davis > Senior Technical Architect > Refractions Research, Inc. > (250) 383-3022 > > > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > Jump-pilot-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Jump-pilot-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
