Latest Contributions by MichelleTischler

‎05-29-2013

I've built my network; set my flow direction; asigned HydroIDs to my pts, net_junctions & lines; run the From/To nodes for the lines; and lastly NextDownID for the lines. I have 57 line segments with -1 as the NextDownID. I only have one true outlet for the network. I have no disconnections in the network when I run a trace. All of the From/To Node fields are populated and have the correct HydroID for the next downstream segment. The segments with the -1's are not endpoints but a segment within the total stream length. Unfortunately, this is a fairly large network and takes four hours to run the NextDownID, so it's not an easy test for fixes unless I break out a portion of the network and test on it. I have disconnected the network, stripped out all Hydro/JunctionIDs, and rerun from scratch to see if I missed a step. Any suggestions are appreciated!

‎05-14-2013

Thanks, Mark! I still have to do a couple spot checks, but I think that is going to work fine. So, I have another variation on the same theme. Some of my control points are gages. I'd like to be able to do a next downstream for every control point and have it report the next downstream gage only. It may have to pass over several CPs until it gets to the next gage. I can easily build a table/layer of the gages with their associated HydroIDs. I also have a dream of running the trace upstream to calcluate all next upstream gages from the downstream gage, but that is for another day and probably learning some code.

‎05-14-2013

I have my junctions that participate in the network and have assigned HydroIDs to them and calculated the NextDownID. Each Junction also has a Control Point ID (CPID) that associates to another model. I would like to use the NextDownID to populate a NextDownCPID field. Right now, all the fields reside in the same feature class in a file GDB. Is there an easy way to do this? Thanks, Michelle

‎08-31-2012

Problem solved. I didn't assign a HydroID to the network junctions.

‎08-21-2012

I thought I'd try and clarify what I've done to see if that might help in finding a solution. I've built my geometric network with one set of points (proxies) and one set of streams and used the Attribute Tool to assign the HydroID to each. We have a custom tool that assigns the Junction ID (Proxy Hydro ID) to the lines. Then I generated the From/To node for the lines, found the next downstream line, and calcluated the length downstream for edges and junctions. Now I want to assign the next downstream junction to the Proxies (points). When I open the dialog box and select my points, the only option I have for the Common HydroID field is "Enabled." Any suggestions would be helpful. Thanks, Michelle

‎08-16-2012

Hi! I'm using ArcH 1.4 and trying to assign the next downstream ID/Junction. When the dialog box opens, it will not allow me to choose the HydroID field to assign from. It only shows the Enabled field. I created the HydroID field as a Long Integer and have been able to build a relationship class with it. It's pretty frustrating bc I've been able to do this before and not sure what I missed this time. Thanks for any help, Michelle

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My Ideas

Latest Contributions by MichelleTischler

NextDownID = -1 but not outlet

Re: How to Calculate Secondary ID for NextDownID

How to Calculate Secondary ID for NextDownID

Re: Next DownID won't assign

Re: Next DownID won't assign

Next DownID won't assign