[mapguide-users] Fwd: Line Snapping

[Sherwin Luna]

Thanks for the reply. i will try this procedure.

On Dec 22, 2007 6:26 PM, Maksim Sestic <max at geoinova.com> 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 <sherwin.luna at gmail.com>
> >>> Date: Dec 18, 2007 11:38 AM
> >>> Subject: Re: [mapguide-users] Digitizing demo
> >>> To: mapguide-users at lists.osgeo.org
> >>>
> >>>
> >>>
> >>> 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:
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> >>> Sent from the MapGuide Users mailing list archive at Nabble.com<http://nabble.com/>
> .
> >>>
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> >>>
> >>>
> >>
> >>
> >
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> >
> >
>
> --
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> .
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