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| GeoCommunity Mailing List |
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| Mailing List Archives |
| Subject: | Re: [gislist] Adding Data About Intersecting Streets to Street
Network Data |
| Date: |
06/08/2004 03:40:02 PM |
| From: |
lovegis .. comcast.net |
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I have not implemented this in geodatabase and ArcOjects using topology but essentially what you want to do is set up a 'Turn Table' data structure similar to the functionality of the ArcINFO 'Turntable' command. This would relate all the possible turns at each node and would handle complex intersections (i.e. where there may be 5 streets merging).
Of course, you may want to keep your data structure more simple (and less complex than would be required to implement a full turntable using ArcObjects as you could easily do this by simply analyzing polyline connectivity) and only denote unique intersecting streets and have fields on your polylines that contain this information. You could do this using two items: From_Node_Connections and To_Node_Connection. In the example you gave the 'From_Node_Connection' would simply be 1st Avenue and the 'To_Node_Connection' would be 2nd Avenue. Then in the more complex, 5 points, example I noted above you may want to have a comma delimited list where there are more than 1 intesecting street name (perhaps there is an offshoot named 'Maple Street' at the 2nd Avenue and 7th street node). Here, the To_Node_Connection would be "2nd Avenue, Maple Street".
The ArcGIS Network Analyst extension, when it is released, should have turntable like functionality.
Regards,
Reily Love
Love GIS Consulting
www.LoveGIS.com
LoveGIS@comcast.net
206-522-2754
206-930-1842 (cell)
> Greetings list,
>
> I think we are close to solving this on our own, but
> some more advice might be useful. We have a polyline
> street network that has a node at every intersection.
> The line segments have address ranges associated with
> them. All the line segments have been digitized in
> the same direction as the ascending street numbers.
> What we are trying to do is populate a field for each
> street segment that contains the name of the
> intersecting streets. For example, the line segment
> for 7th street between 1st and 2nd ave would contain
> values associated with 1st ave and 2nd ave in its
> attribute table. Anyone know how to do this? BTW:
> each street segment is a single line, even if traffic
> flows in both directions. We are using ESRI desktop
> and workstation, and all the data are stored in a
> geodatabase.
>
> Derek Link
> GIS Analyst
> GeoDecisions / A Division of Gannett Fleming
> 1001 Durham Avenue
> South Plainfield, NJ 07080-2305
>
> Tel: (908) 755-0040
> Fax: (908) 755-9849
> www.geodecisions.com
>
>
>
>
>
>
>
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