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Dear all, I am trying to get the shortest path in behave of (time - distance) between a set of 200 nodes. I have two method to find it: using shortest path method ( calculated between two points - it will take a lot of time). using OD matrix method ( very fast). So i have created a small network (6 nodes) to check the results of each method. For distance: the results from two methods are the same. For Time: there are differences between the two methods. Also, there are differences when i change between the origin and destination for the both methods (for example: time from node 2 to node 3 & from node 3 to node 2). I hope any one can tell me about the reasons of different results. *attached the results of the simple network.
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07-25-2014
09:45 AM
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Do you mean to try to make OD cost matrix? The points distances from the network are 20-250 m.
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07-15-2014
06:23 AM
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Hello, I have a layer with points. Now I´m trying to calculate the distance from each point to all other points with the network analyst. The points are not part of the street network I created. But I want to calculate the distance with by this street network. The problem is 1. how can i join the points with the network ( how to find the nearest street network node to each point)? 2.how can i calculate the shortest distance form each point to all the other points ?
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07-15-2014
12:38 AM
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The tutorial data version is 9.3. So after what you have explained, i think the problem is not becuase of the software version.
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07-02-2014
11:20 AM
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Dear Melinda Morang, Thanks for the reply. No i didn't delete the system junction shapefile. Actually in the final step , after the new network shapefiles have been created, i try to build the network but it always failed and gives me this error. Also, i have tried these tutorials using my personal Laptop (ArcGIS 10.1 , Windows 7, service pack 1), and there is no such error.
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07-02-2014
10:35 AM
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Dear Joe Borgione, Thanks for the reply. I am using ArcGis 9.3 on PC workstation, windows 7, service back 1. answers to your questions: 1- No, the geodatabase which i am trying to create the network dataset is in my PC drive not shared drive. 2- Its ok, i can create a feature classes within this geodatabase. I will check our network setting again. But can i ask, how can a computer network issue affects the results of ArcGIS?
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07-02-2014
10:09 AM
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Its my first time to use Network Analyst. I am trying to perform exercise 1,2 in the tutorials " creating a network database". But i always get an error in building the database.
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06-29-2014
11:36 PM
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