Thanks for the reply. i will try this procedure. On Dec 22, 2007 6:26 PM, Maksim Sestic <[EMAIL PROTECTED]> wrote:
> > Recently coded something similar, for digitizing accidents (points) > against > road network. It's really a no-brainer, I implemented it as a web service > backed by MG. Downside - it's relatively slow if you rely on MG+client > only. > It redlines snapped points and flushes them back to feature store once > digitizing is over. But you can always intelligently precache targeted > geometry on a client and do some JavaScript mish-mash, for CAD-like > experience. > > I guess future enchancements related to MG client speed will have to > tackle > problem of client-side data caching. > > Regards, > Maksim Sestic > > > > Kenneth, GEOGRAF A/S wrote: > > > > I would like to see this functionality on the client, for use with > > inteactive digitization. > > The closest to an actual implementation I have seen is the MapBender > > project. > > > > Regards, Kenneth, GEOGRAF A/S > > > > > > > > Maksim Sestic skrev: > >> It's relatively easy to do. Here're the basic steps: > >> > >> 1) Make a Buffer around a point (buffer size = treshold) > >> 2) Find LineStrings intersecting a Buffer > >> 3) If no LineStrings were found, then return original point (or > whatever) > >> 4) Enumerate each LineString vertex to see which one is closest to the > >> point > >> (distance comparer) > >> 5) Return closest LineString vertex as a "snap" point > >> > >> Regards, > >> Maksim Sestic > >> > >> > >> > >> Wind wrote: > >> > >>> hello everyone: Has anyone done any snapping point to line in mapguide > >>> enterprise? > >>> > >>> ---------- Forwarded message ---------- > >>> From: Wind <[EMAIL PROTECTED]> > >>> Date: Dec 18, 2007 11:38 AM > >>> Subject: Re: [mapguide-users] Digitizing demo > >>> To: [email protected] > >>> > >>> > >>> > >>> hello everyone: Has anyone done any snapping point to line in mapguide > >>> enterprise? > >>> > >>> > >>> > >>> BradM wrote: > >>> > >>>> Hello all: Digitizing new point, line and polygon features is > critical > >>>> for mapping features on the community mapping network at www.cmnbc.ca > . > >>>> Does anybody have digitizing tools working in a demo that I can view? > >>>> Is > >>>> anybody interested in developing the tools to make them really > >>>> efficient? > >>>> We need tools that give added functionality for editing, creating > new > >>>> points by adding a distance and a bearing from one point to the next, > >>>> creating shapefiles, downloading shapefiles, snapping points to lines > >>>> and > >>>> more.... > >>>> thanks > >>>> > >>>> > >>> -- > >>> View this message in context: > >>> http://www.nabble.com/Digitizing-demo-tp4127680s16610p14377506.html > >>> Sent from the MapGuide Users mailing list archive at > >>> Nabble.com<http://nabble.com/> > . > >>> > >>> _______________________________________________ > >>> mapguide-users mailing list > >>> [email protected] > >>> http://lists.osgeo.org/mailman/listinfo/mapguide-users > >>> > >>> _______________________________________________ > >>> mapguide-users mailing list > >>> [email protected] > >>> http://lists.osgeo.org/mailman/listinfo/mapguide-users > >>> > >>> > >>> > >> > >> > > > > _______________________________________________ > > mapguide-users mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/mapguide-users > > > > > > -- > View this message in context: > http://www.nabble.com/Fwd%3A-Line-Snapping-tp14451050s16610p14467864.html > Sent from the MapGuide Users mailing list archive at > Nabble.com<http://nabble.com/> > . > > _______________________________________________ > mapguide-users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/mapguide-users >
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