Latest Contributions by NathanHeickLACSD

Thanks @RobertKrisher.  Things are becoming much clearer now. ... View more

Hi Robert, Is flow direction when using subnetworks not stored anywhere in the network, but is instead calculated dynamically every time it’s needed?  Could you get different flow directions from using a different tier with different subnetwork definitions? Thanks for your help! ... View more

Thanks Robert!  This really starts to lay down your options and decisions.  I was not expecting that connected traces used subnetwork controllers.  I need to see how using sinks compares to digitized direction.  I imagine that the worst case scenario would be that some pipes would be marked as indeterminate even though the pipe slopes in a certain direction.  Is the algorithm in the geometric network for setting flow direction similar to the UN? Yes, I understand the concept of an isolation trace in water, but I was wondering how it actually worked and how it might be applicable to sewer systems.  One use case for us would be how do you divert flow around an SSO.  We can figure those things out manually with good data and symbology.  However, a flow trace that told you where to place a stop log to isolate an area would be more expedient in an emergency just like water crews trying to figure out which valves to close.  If we were using digitized direction, it would come down to what isolation devices, in this case stop logs, would block (redirect) flow from reaching the problem area.  We have more needs than this.  We need ways to design, track, and share flow diversions across the organization and integrate them into the work management system.  We've been gathering requirements internally and I've been trying to think of an information model for representing flow diversions.  Some of the flow diversions may be partial.  Some of them may be complete.  They all involve some upstream device(s) redirecting flow and they impact some set of downstream features.  Diversions are used to reduce flow to treatment plants for maintenance, pipes for construction, or manholes that are overflowing.  There are  scheduling component, data editing, design, and sharing components. I would be interested in talking about this more in the future.  I imagine that the power of the UN trace tool could lead to custom geoprocessing tools that can perform more advanced logic through multiple traces combined, that is if it you can't do it with one trace. It would be nice if there is a chart or a blog showing which traces have multiple passes, what each pass does, and which traces use subnetwork controllers.  I will try to do my own research.  The concept is a little bit hidden at first when you are learning the UN.  It's really important with the filter barriers.  It would be nice if that was more explicitly discussed. ... View more

Thanks @gis_KIWI4 and @RobertKrisher.  My follow up questions are: 1.  Can subnetworks be defined using digitized direction? 2.  What won't work if you do not set up tiers and subnetworks and use digitized direction only?  Is it just the subnetwork trace?  Is it also the isolation trace?  Is there any other functionality in the UN that depends on it? ... View more

Is the following accurate then? 1.  UNs in enterprise geodatabases require branch versioning to edit.  Branch versioning is only available through ArcGIS Enterprise and enables multiuser editing.  The libraries that make the updates to the RDBMS are in ArcGIS Enterprise.  ArcGIS Pro, web, and mobile clients use the same patterns to edit through web services. 2.  UNs in file or mobile geodatabases are inherently single-user.  Editing these geodatabases requires libraries that are only available in ArcGIS Pro or the Runtime.  The client modifies the file-based geodatabases. ... View more

Thank you.  That is very good information.  Right now, we are at ArcGIS Pro 2.9.14 and ArcGIS Enterprise 10.9.1, but we're getting a lot of pressure from some users to upgrade.  I need facts like this that demonstrate incompatibilities. ... View more

From what I remember, it was successful.  It might have also been that I wasn't logged in to see all of the services because they weren't all shared publicly. ... View more

I narrowed it down a little bit more.  Yes, the angle in the renderer was zero, but it is also that way on the service.  What was missing is the visual variable for the rotation angle.  The visual variables were an empty array somehow.  I think the issue is in the _createOperationalLayers method of the printTask.  I created a workaround by adding another function in Print.js of the Print widget to put back the visual variables that were missing.  This function is like _fixInvalidSymbol and _excludeInvalidLegend. ... View more

Hi Michael, We have some large raster catalogs that we will be moving to mosaic datasets in the near future and a custom flow trace that uses the geometric network.  So, things that ArcGIS Pro doesn't support. ... View more