Yes, this is a known design limitation, not a bug. Sunburned Surveyor wrote: > 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 > >
-- 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
