Removing Disconnecte Roads from a Network Dataset

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09-23-2011 07:10 PM
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New Contributor
I'm trying to build a network data set using Open Street Map data to use for location/allocation modeling for a large portion of Northern California.  Things are going pretty well, but I'm having one problem.  There are various areas that contain road segments that do not connect to any other road segment in the data set.  Is there any way to detect and remove these segments?  I've tried looking at the geodatabase topology tools, but couldn't find a tool that matched the context, particularly because some of these "floating" roads are composed of multiple polylines.  Any ideas?

Thanks.
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First make sure you are using AnyVertex connectivity if you have data from OSM. You could do a service area lines to see what is connected to your starting facility location and select those features and reverse the selection.

Or you could make geometric network on that data and use one of the Utility Network Analysis toolbar options to find disconnected portions:
http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//002r00000033000000.htm

Or you could use an ArcObjects sample to do this:
http://help.arcgis.com/en/sdk/10.0/arcobjects_net/conceptualhelp/index.html#/Custom_Solver/000100000...

Jay Sandhu
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Jay,

Thanks for the help.  This was the first time I've ever used a geometric network.  It worked out great.  Did just what I needed.  Thanks.
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