Latest Contributions by JaySandhu

There is NO way to generate all possible paths from A to B as there can be an infinite number of paths. I still think you are not approaching the problem in the right way. If you have a start location A and a destination polygon area B and you want to cut access to B, then one way to do this is to use the BUFFER tool and buffer the B polygon area by some value like 100 meters. Then convert the buffer polygon to a line and load that line as a line barrier into your route analysis. This will stop all paths going into B. The other option was as I mentioned in the other email, use service area lines to find lines that connect to B and place restrictions on them. If this is not what you have in mind, please explain to me how the solution will look like? Jay Sandhu ... View more

You can use network analyst and a local network dataset of your streets and then you can compute routes without needing to connect to an online resource. You can also look at the Navigator app that can allow you to download data to your device and generate routes locally. More information here: ArcGIS Navigator | Advanced Workforce Navigation and Routing (esri.com) Jay Sandhu ... View more

If you find a shortest path from location A to B and now want to find another path, you can make the shortest path a little slower and solve again! To make the path slower, you can take the output of the route solve and load it as a line barrier into the same route analysis layer. You can set it to be a scaled cost barrier and set the scale to be 10 percent higher. So, you can set the scale as 1.1, that is all costs of lines under that line barrier will be multiplied by 1.1 or ten percent more. Solve. You should get a different path. Now take the route output and again add it as a scaled cost line barrier with scaled cost of 1.1 and solve. So roads that are common will now be scaled 20 percent. OR you could have taken the first line barrier and changed its scale to 1.2 and solve may give you another path. This is a good way to generate some alternate paths. But not a good way to generate ALL paths. Jay Sandhu ... View more

Can you provide some more details about how you are running your analysis? That is, what software, service area settings? One thing you check is the trim distance settings. It might be set too large and you can reduce it something more meaningful like 100 meters. Another thing to check is if you are using Generalized polygon output., perhaps change that to Standard precision. Jay Sandhu ... View more

If you do not specify any specific time of day then it will not know which traffic numbers to use. So, the default behavior is to find routes based on published speeds. Jay Sandhu ... View more

I am trying to understand what you are trying to achieve. So do you have an incident and a facility pair that you need to route to? And you have many sets of these? So closest facility is not a solution? So one way would be to have a closest facility layer with one facility and all the incidents that need to route to it. Solve that and write out the results. Load (replacing the previous) another set of incidents and 1 facility and repeat. Or you can use the Route solver. Load in every pair of incident/facility with a common ROUTENAME property and solve. This will let you solve multiple shortest paths (between defined start/end locations) together. Jay Sandhu ... View more

You can import the line barriers or use the Add Locations to add them to an existing NA route layer. When you add these, make sure to set them as added cost and not a restriction. And give a value for the added cost. See doc for more info: Barriers—ArcGIS Pro | Documentation   If you append and no solution was found then most likely these lines are acting as restrictions and not an added cost/delay. As far as your other questions about a central place like school, look at the Closest Facility Solver. Make the School the facility and other locations are incidents. Solve and you will get routes from each incident to the school. Jay Sandhu ... View more

Can you use a GP tool like Select By Location and use the Intersect option to select all the streets that intersect your barrier polygons? Jay Sandhu ... View more

The doc on the page you reference says: If there are 100 origins and 200 destinations, the cost will be 10 credits. If you specify a cutoff, or limit the number of destinations, such as to find only the 5 closest destinations within 10 minutes of every origin, the cost will still be 10 credits, as the credits depend on the number of input origin-destination pairs. So it says that it is based on the inputs NOT on how many to find.  Jay Sandhu ... View more

In the TOC, right-click on your Network Analysis layer (OD or CF) and bring up its properties. Click on the Network Locations tab and there is setting towards the bottom to Exclude restricted portions of the network. See screen shot below. You can turn on the setting and it will be honored next time you load locations. For existing locations, you can right-click on the Facilites or Origins/Destinations in the NA Window and choose to recalculate the existing locations (second screen shot below). Jay Sandhu     ... View more

I am trying to understand what you are trying to achieve. What is a section group? Perhaps that is not important. All I can understand is that you have a large number of locations/stops and you want to find a way to route through them 800 at a time. I presume that you want to optimize the visit order for those 800 stops. Normally I will suggest that you look at the Vehicle Routing Problem solver as a way to solve this type of problem. However, there are limits to how big a problem you can solve online. If you have your own local network dataset then you can use VRP in ArcGIS Pro to solve it. More info on VRP: Vehicle routing problem analysis layer—ArcGIS Pro | Documentation Limits for the online service: Job request—ArcGIS REST APIs | ArcGIS Developers Jay Sandhu ... View more

When demand locations are loaded, you can also have them specify a cutoff value. This will override the layer's cutoff value. Take a look at the Cutoff_[Cost] parameter in doc here: Location-allocation analysis layer—ArcGIS Pro | Documentation This is not a facility based option, rather a demand based option. For example, rural location can have a larger cutoff .vs. downtown locations. Jay Sandhu ... View more

Adding on to what Melinda posted, here is what a 1000 foot service area lines and polygon with a 10 meter trim looks like using Network Analyst: Jay Sandhu ... View more