I have a NetworkDataset with the following problem:
I load a Shapefile with streets of a area into a NetworkDataset. But there are a lot of lines without a connection to the network. When I load my files with the start- and endpoints, the analyst snap a few points to those lines, without a connection to the rest of the network and the track can not be routed.
I want to detect the lines without connection, but I don't know how... Has the NetworkAnalyst a solution therefor?
Unfortunately, there isn't a tool within Network Analyst that would traverse all your links and highlight those that are disconnected. However, you might consider using a geometric network.
There are some tools for tracing geometric network available from the Utility Network Analyst toolbar in ArcMap (you will be able to find disconnected segments, i.e., those ones from which you cannot reach all other network segments) as well as GP tools which you may also call from arcpy if you wish to automate the QA/QC process. I've run these tools on 2 mil.+ segments network and it worked fine.