Latest Contributions by MelindaMorang

All of Network Analyst is specifically constructed around solving shortest-path problems on a network made of edges and nodes, so unfortunately we will never be able to accommodate navigating through open areas without modeling them as some sort of network of edges and nodes.  The ArcGIS Indoors product has some tools to create a fishnet-type lattice across rooms and hallways.  There maybe some raster-based tools for outdoor open areas as part of our raster toolboxes or maybe our Defense solutions, but I don't know much about those products.  Talk to your distributor or Esri representative, and maybe they can point you in the right direction.  Alternatively, please describe in more detail what you're trying to do, and maybe we can narrow in on something. ... View more

I can't tell from your screenshot what the errors you're actually getting are. The input to the tool is the folder containing your GTFS files, not the files themselves.  So you just need to give the tool the folder path.  If you're having trouble selecting it using Pro's Browse dialog, you could try navigating to that folder in the Windows File Explorer and copy/pasting the path from there into the tool dialog. Alternatively (based on your other post), maybe the error you're getting is related to a problem with the data rather than a problem selecting the data...? ... View more

Hello Bekah.  Have you verified that the dataset's values are valid and don't have non-numerical values? Would you be able to share the GTFS dataset with me?  I'd be happy to debug the tool in case there's a bug, or just help you find the error in the data. ... View more

Do you need the actual number of dirty areas?  Why? The NetworkDataset class has a property, isBuilt, which is set to False if the network has dirty areas and needs to be built. ... View more

Thanks for the info, @TM_NPS.  You should use the Select Data utility in Model Builder to access the sublayers of a network analysis layer.  You can find this utility on the Model Builder ribbon. Does this meet your needs?   ... View more

One further question @PamT.  You said you don't want to use a network dataset template, but why wouldn't that work for you?  If you don't need any complicated cost or restriction attributes, then the template will be very simple and won't require a consistent schema in the source feature classes.  As long as the inputs have the same feature class names, it should just work fine.  Or is enforcing the feature class names too much for your multiple organizations? ... View more

Thanks @PamT.  That does make sense. For your use case (since we're unlikely to be able to add this functionality quickly), you might be able to use Python's networkx package to construct a graph from your network dataset and then use one of the many graph search algorithms in that package to get the results you need. Here is a sample script that creates a networkx graph from a network dataset using the nax NetworkDataset class.  Not exactly what you need, but maybe enough to get you started. Using a layer-based workflow with arcpy.na, as you suggested, is also an option. ... View more

I hear your frustration, but I'll need a bit more specific info than that.  What  is your typical workflow, and why do you need to know which feature dataset and set of feature classes goes with a particular NA layer?  Is it because you want to preserve the output of the analysis for future use, use it as input to other tools, clean it up, etc.? ... View more

Thanks for the input, @PamT.  That's an interesting use case, and I understand the problem.  However, I'd still like to understand how you expect to use this workflow effectively.  When you run the Create Network Dataset tool, it creates a very simple network that has only a length attribute based on the shape length of the edge sources.  Is this cost attribute sufficient for your needs?  I suppose there are some cases where this would be sufficient, but usually people need to adjust their cost attributes to their needs before the network is usable, so even if we gave you the ability to add travel modes, the network might still be useless. ... View more

Hello.  Sorry for the delayed response. Could you tell us why you want to control the output location and feature dataset/feature class names for network analysis layers?  Your understanding of how it works is accurate, and you're right about the limitation in user control here, but we'd like to understand your workflows better so we can assess how we might better meet your needs.  Thanks. ... View more

Hi Dale.  It seems unlikely that we'd be able to add user-facing turn restrictions into the AGOL service dataset because it would require a schema change or some entirely new concept we don't have (turn barriers?).  However, we can definitely take a look at the specific intersection that's causing you problems and work with the data vendor to get it updated.  Can you send us the coordinates of the intersection and maybe a screenshot of the left turn that isn't safe? ... View more

This was implemented in the Pro 3.3 release with the Last Mile Delivery solver. ... View more

In case this topic is still relevant to you, I wanted to share that with the ArcGIS Pro 3.4 release, you can now create a new Public Transit Data Model feature class, LVEShapes, to store the pretty on-street transit route shapes for visualization instead of just the straight-line stop connections in the LineVariantElements feature class.  You can create an LVEShapes feature class from a GTFS shapes.txt file when running the GTFS To Public Transit Data Model tool. Once you have a transit-enabled network dataset that includes LVEShapes, you can solve a Route or Closest Facility analysis and use a new downloadable prototype tool, Replace Route Geometry With LVEShapes, to post-process the output routes to swap the geometry derived from LineVariantElements with geometry derived from LVEShapes.  That tool is part of the Transit Network Analysis Tools download, which you can get from GitHub or ArcGIS Online. ... View more

This topic covered a lot of ground, but one small piece of it was "My routes are being drawn as following the Line Variant Elements- is there any way to set it so that it follows the actual streets or subways that the vehicles actually take? " In case this topic is still relevant to you, I wanted to share that with the ArcGIS Pro 3.4 release, you can now create a new Public Transit Data Model feature class, LVEShapes, to store the pretty on-street transit route shapes for visualization instead of just the straight-line stop connections in the LineVariantElements feature class.  You can create an LVEShapes feature class from a GTFS shapes.txt file when running the GTFS To Public Transit Data Model tool. Once you have a transit-enabled network dataset that includes LVEShapes, you can solve a Route or Closest Facility analysis and use a new downloadable prototype tool, Replace Route Geometry With LVEShapes, to post-process the output routes to swap the geometry derived from LineVariantElements with geometry derived from LVEShapes.  That tool is part of the Transit Network Analysis Tools download, which you can get from GitHub or ArcGIS Online. ... View more