Latest Contributions by MelindaMorang

Hi David. Load Locations (the wizard tool) and Add Locations (the geoprocessing tool available through ArcToolbox) technically do the same thing.  You can use either within ArcMap.  Load Locations is accessed by right-clicking input classes in the Network Analyst Window or by dragging and dropping layers into the Network Analyst window.  Add Locations is accessed from ArcToolbox.  If you are seeking to automate a workflow through model builder or python, you will need to use Add Locations. You might notice some things (for instance the "Exclude Restricted Portions of the Network" button) in Add Locations that don't appear in the Load Locations dialog.  Some options apply to the Network Analyst layer as a whole and can be set in the layer properties instead of in the Load Locations dialog. Please let me know if you have any further specific questions about how to do something in either Add Locations or Load Locations. ... View more

Hi James.  So sorry for your difficulties.  Can you attach a screenshot showing your issue?  It's very difficult to diagnose your problem without actually seeing it. ... View more

Hi Eric.  We are aware of the issue with NACampus Directions you mentioned where each step generates walking directions and then summarizes them with "Drive X mi."  We're working to get it fixed, but I'm not sure of the current status of this issue.  For now, please accept our apologies for this problem, and good luck with your project. ... View more

What you want is the OD Cost Matrix solver.  It does exactly what you describe. You can read about OD Cost Matrix analysis here: http://resources.arcgis.com/en/help/main/10.1/index.html#//00470000004r000000 If you're new to Network Analyst, you might benefit from some of the tutorials here: http://resources.arcgis.com/en/help/main/10.1/index.html#//00470000005r000000 ... View more

The Network Analyst tools require points as input.  To find the network distance from a lake or river, you would want to use the OD cost matrix solver, but you can't load a polygon or line feature class for Origins or Destinations.  They have to be points.  You can convert your polygons or lines to point features by finding the centroids of those features, by using the features' nodes, by finding the intersecting points of your streets features (if they intersect at all), or by manually digitizing river/lake access points along the roads. ... View more

Hmm, that's odd. Are you running the Copy Traversed Source Features tool from ArcToolbox, or are you using it within a script tool (ie, calling it from Python)?  If it's in Python, you're probably referencing the wrong layer or referencing it incorrectly.  Can you include a screenshot or some code or something? ~Melinda ... View more

Hi Obi.  You might be able to get some of the information you want using the Copy Traversed Source Features tool (http://resources.arcgis.com/en/help/main/10.1/index.html#//004800000023000000).  This tool can tell you which road segments were used after you solve a route.  You can play with the resulting tables to calculate the number of time each segment was traversed on your routes, and thereby calculate the most-used streets. Depending on your application, Location-allocation might be a good tool for you. You'll need a layer of demand points, points showing where potential customers live or are located.  It doesn't really let you use "busy streets" exactly, although you could create a demand point at an intersection and use a traffic count to weight it or something. Let us know if you need further help. ... View more

There's a much easier way to do it than that. When you Load Locations, you can specify a different break value for each service area using field mapping.  You need a column in your input data that has the break values you want (so, 10 for Facility A, 12 for Facility B, etc.).  In the field mapping table in the Load Locations dialog box, there will be an entry on the left that says "Breaks_[Impedance Attribute]", where the [ImpedanceAttribute] part is filled in with whatever impedance attributes are available in your network dataset.  Click in the space next to the one you want ("Breaks_Miles" or some such), and you'll get a drop-down of the fields in your input data.  Select the field in your data that has the break values (10 for Facility A, 12 for Facility B, etc.).  When the Facilities sublayer is created, you'll notice that the Breaks_Miles column is now filled in with the values from the field in your input data.  When you solve the service area calculation on that impedance attribute, the values in this column will override the default cutoff you give it in the settings. Good luck! ... View more

It sounds like you'll have to modify your Excel table.  You will need a single row for /each/ address point in order to geocode them.  It could look something like this: Point1 Address1 RouteA Point2 Address2 RouteA Point3 Address3 RouteB Point4 Address4 RouteB Point5 Address5 RouteC Point6 Address6 RouteC ... View more

Hi Amanda.  Do you have the Network Analyst extension?  If so, it sounds like what you want is the Location Allocation tool: http://resources.arcgis.com/en/help/main/10.1/index.html#//004700000050000000 The purpose of this tool is to optimize the placement of businesses or other facilities, and it uses street network distances. To use Location Allocation, you will need a network dataset, which is a special format of street network.  You can create your own (which is not an easy task), purchase the StreetMap premium one from Esri, or use the one on your data & maps DVD that came with your ArcGIS installation materials.  Ask your sysadmin. Good luck. ... View more

Aubin_1, If you are running an analysis for a location in North America, you can use the network dataset that comes with your Data and Maps DVD included in your ArcGIS installation materials.  This network dataset contains speed limit information and a time-based impedance attribute you can use for drive time analysis. If you're running an analysis for somewhere outside of North America, you will have to purchase StreetMap Premium data from Esri or create your own network dataset. Let us know if we can provide any further assistance. ... View more

Hi Obinem. If you're new to Network Analyst, it would probably help you to read through the Route tutorial here: http://resources.arcgis.com/en/help/main/10.1/index.html#/Exercise_3_Finding_the_best_route_using_a_network_dataset/00470000005w000000/. However, it sounds like you already have a pretty good start on what you're trying to do. Currently, we don't support batch routing the way you're trying to do it, with two separate tables of origins and destinations.  If the only thing you care about is creating a table showing the time or distance it takes to get between each of those origins and destinations, consider using the Origin-Destination Cost Matrix solver instead of Route. If, however, you want to be able to display the routes on the map, you can get around the problem by doing the following: - Put all your origins and destinations in the same file so you have only one table.  You can do this by just geocoding them all at the same time. - Are you trying to route between specific pairs of points?  If so, give each point in your table an identifier so that the origin and destination both have the same identifier.  So, create a field in your table called RouteID or something and fill it so that each pair of points you want to route between has the same RouteID, unique from all the other RouteIDs. - When you "Load Locations" in your Route layer, look in the "Location Analysis Properties" box in the Load Locations dialog.  There should be a field on the left that says "RouteName".  Click the blank space to the right of it to get a drop-down showing the fields in your table, and select the RouteID field you created.  This tells the solver that the points that have the same RouteID should end up in the same route.  You'll essentially be creating a bunch of different routes at once for all your pairs of points. - Change any other settings you want to change and click the Solve button. Let me know if that helps.  Also, if you're getting error messages, let us know what they say so we can give you more specific advice.  Good luck. ... View more

Hi Anand. Are you trying to generate merged polygons ("Merge by break value" in the Polygon Generation tab)?  If so, this could slow down the analysis considerably, since you have so many input facilities.  If you ARE using Merged, try using Overlapping instead, as this should solve much faster.  If you still want to merge them by break value, you can solve them as Overlapping first and then use the Dissolve tool to dissolve them by break value afterwards. ... View more