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Thanks for your comprehensive information. I understand completely and you save my time. Thanks again. I actually have another question. If I want to have directions in the network, which kind of coding I should have in the attribute table of shape file to link it to network dataset attribute. For example, if we have a street that digitized from point A to B in the shape file. How we can code it in the attribute table that it is oneway from A to B or oneway from B to A useful in network dataset. In general, do all the digitized polyline for oneway direction streets in the shape file should obey along-digitized direction, in other words, we should know their along-digitized direction? Thanks
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11-14-2011
04:14 AM
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Thanks for the fast replying. I actually turned off all the restriction layers and also delete restrictions created automatically by the ArcGIS in attributes. But when I create the network dataset, it seems all the roads are oneway. I found oneway from Network Identify tool. When I click on every road, it highlights the road with an arrow which seems should be the directions. I checked the connectivity issues. Some lines has problem that did not have connection by vertices that I corrected them. I deleted those lines and draw again manually. I found When I draw a line started from one point and ended from another ponit, the network dataset building obay this topological way as the direction of the street. Write now there is not any warning, because during drawing new lines, I was care of the directions. But I solve the network again with all the roads oneway. Many Thanks.
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11-10-2011
10:30 AM
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Thanks for your information. I actually did all the cases you mentioned, but it is still oneway for all my roads. So, for example when I am going to find the nearest points from a layer to another point layer, some point has warning that can not find the route. Because the corresponding street for accessing the nearest points is oneway in reverse direction. If it is possible you can see my data and why it is like that, I will send my data to you. More than week I am struggling with that and cannot find the problem. Many Thanks.
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11-09-2011
10:37 AM
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Hi, I'm goint to find the nearest points from a shape file (nearest destination) to another shape file (points as buildings center) through the network analyst. I tried several times to create the network dataset that all street be twoways without any other restriction. But the problem is when I built the network from the street shape file or geodatabase, all streets treat as oneway. I went through the ESRI help manual in different way. I could not figure out what is the problem . If anyone can help me I really appreciate.
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11-08-2011
02:31 AM
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