私は約6000本の線分を持つ大都市のストリートネットワークを使用しています。ネットワーク解析を行う際に、ネットワーク内の切断された要素のエラーが発生します。どの線分とも接続されていない切断された線分や、複数の線分が互いに接続しているが大きなネットワークには接続していないような線分を識別するツールはありますか？これは大規模なネットワークであり、目視でこれらを見つけることができません。 <\/P>
ありがとうございます。<\/P><\/BODY><\/HTML>
If you are looking for physical connectivity issues (not the ones caused by attributes like oneway's), you can use the Utility Network tools to find disconnected parts from some known location. Take a look at:
Find Disconnected Features in Geometric Network—Help | ArcGIS Desktop
Note that this will require you to create/build a geometric network. Once you correct your issues, you can delete that and create a network dataset for use with Network Analyst. Alternatively you can use the Service Area solver (with the lines option) to find things that are "connected". Once you have this as a selection, invert the selection to find features that are not connected.
Jay Sandhu
to ensure the integrity of a network
...by modeling the features in a topology or using the Integrate geoprocessing tool....
In any event, check Integrate on a copy of the file
In addition to what Dan Patterson mentioned, here is a link that will get you started with editing a network dataset:
Ways to edit network datasets—Help | ArcGIS Desktop
Yes, I did this already with geometric network. But nice to know about doing the same with service area solver. Thank you.
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