[mapguide-users] Fwd: Line Snapping

[Brad Nesom]

I remember a database rules based solution I saw demonstrated on the old
mapguide 6.5 website. Those application demos aren't available any longer
but it is at least a thought that it could be done through rules based
snapping.

Brad

 

  _____  

From: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Kenneth,
GEOGRAF A/S
Sent: Friday, December 21, 2007 12:05 PM
To: MapGuide Users Mail List
Subject: Re: [mapguide-users] Fwd: Line Snapping

 

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  <mailto:sherwin.luna at gmail.com> <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
 
      

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