Latest Contributions by JaySandhu

Gareth, If I understand correctly, you want to add capacity on your facilities. That is not supported in Location-Allocation. It solves the minimum number of facilities such that demand is assigned to the closest chosen facility. Can you describe what type of problem you are trying to solve with capacity. Perhaps their are other ways to achive your goals. Regards, Jay Sandhu ... View more

If you are unable to generate directions on the tutorial data then I will suggest that you contact ESRI technical support so that they may diagnose the issue and see what may be going on. Regards, Jay Sandhu ... View more

Take a look at the Interpolate Shape tool. More info here: http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//00q90000006m000000.htm Jay Sandhu ... View more

The error message you are getting says that the "directions configuration file" is invalid. Did you edit or change this file? It is located in: C:\Program Files\ArcGIS\Desktop10\NetworkAnalyst\Directions If you have not changed this file, then it could be some data related issue. It appears from the screen shot you are using old 9.3 tutorial data. Can you use the 10.0 tutorial data and see if the problem goes away. Jay Sandhu ... View more

>What i want to do is, to calculate the best route according to the slope information i got. Given that a shortest path minimizes the overall cost of a path, can you describe how you would use the "slope" to provide the best route. Once that is clear perhaps someone can suggest how to solve this problem. Jay Sandhu ... View more

What network dataset are you using? See my earlier post and tell me if your network dataset says that it supports providing directions. Without any details, it is not possible to provide any useful help. Regards, Jay Sandhu ... View more

The Network dataset object model is described as part of the geodatabse OMDs. You can access that here: http://help.arcgis.com/en/sdk/10.0/arcobjects_net/componenthelp/index.html#/Overview/002500000n8v000000/ Then expand the ESRI.ArcGIS.Geodatabase and then click on the Geodatabase Namespace Object Model Diagram. This is a multi-page PDF. Page 14 is the network dataset OMD. To query the network take a look at the following method: http://help.arcgis.com/en/sdk/10.0/arcobjects_net/componenthelp/index.html#/QueryEdge_Method/0025000005tm000000/ Jay Sandhu ... View more

You could use the GP tool, "Split Line At Point" tool to split the route at the stops after the fact. http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/Split_Line_At_Point/00170000003w000000/ Jay Sandhu ... View more

Ed, As Alex pointed out before, the GP Dissolve Network tool is what you want to use to remove the psuedo junctions (i.e. junctions with valency of 2). Then you can compute your sinuoisty property and apply it back to the original set of edges. Read more here: http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/Dissolve_Network/00480000000w000000/ Jay Sandhu ... View more

Network Analyst solves on a network. It does not know about "off road". So by default it will give you a total path length based on the network. However you can add in an extra delay at the start and end location to the total path length. Say you are solving on "meters" and you also happen to know how many meters away the start and end locations are from the closest road, then when you load in the stops, you can map in this information to the "Attr_meters" field. Now when you solve, it will add the additional information from the start and end location to the overall path length. You can read more about the Attr_[Impedance] here: http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//004700000045000000.htm So then the question is how far away are the stops from the network. You will have to run some tool to figure that out in the units of your impedance attribute. Couple of tools you could use are the Near tool and the CalcualteLocations tool which adds an additional field with the distance to the snapped location on the network. You may have to change the units of the distance to match your impedance units. Regards, Jay Sandhu ... View more

It is not clear what you are trying to achieve. A shortest path solver will find a path with minimum "impedance" and sum that up as the total impedance of that path when writing the output. Perhaps you can explain it a bit more (big picture) of what you want to achieve. Jay Sandhu ... View more

Belinda, Since you have connectivity issues and your impedance attributes are 0, you need to do two things. First, fix the connectivity issues. You can take a look at the "Editing Source Features" section here and follow the links to the integrate tool or the topology section: http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/Ways_to_edit_network_datasets/00470000001q000000/ Once your connectivity is fixed, re-create the network and then make sure on the Attributes Tab where the impedance attribuets are listed, click on the Evaluators button and specify where the impedance attributes will get their information for each edge. If you are un-sure on what to do here, take a look at the tutorial data for San Francisco that comes with Network Analyst. Regards, Jay Sandhu ... View more

See the following post for more details: http://forums.arcgis.com/threads/12128-add-origin-amp-destination-locations-from-the-same-row-to-a-route-analysis-layer?highlight=routename Jay Sandhu ... View more

You can create one Route Analysis Layer and load all your 50K rows and solve. To do this, make sure you have an ID on each row, say a number from 1 to 50k. Load your first lat/long pairs and map the ID as the RouteName as Stops Then load your second lat/long pairs mapping the same ID as the RouteName. Now you will see 50k distinct route pairs in a single route analysis layer. Solve. You will get 50k paths and you can export out the data as needed. Jay sandhu ... View more

One reason the service area polygons may not get created is bad connectivity in the network. You can bring up the properties of the service area layer and on the Line Generation tab, check on the generate lines option and re-solve. Do you get any service area lines? If no lines are generated, can you do a shortes path route using the Route Analysis layer and get back a path on that network? If you can not get a path then there is probably a connectivity issue or some attribute (Restrictions or Impedance) that are causing the solvers to not work. On the NA toolbar, the second from right icon lets you "identify" network edges. Use it to inspect some lines and see what costs (impedance attribute), restrictions are on that edge and also see if the edges are connected to all its relevant neighbors. Jay Sandhu ... View more