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Results tagged with geometric-network
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user 934
A geometric network is a set of connected edges and junctions (nodes) along with connectivity rules that are used to represent and model the behavior of a common network infrastructure in the real world. Geodatabase feature classes are used as the data sources to define the geometric network. You define the roles that various features will play in the geometric network and rules for how resources flow through the geometric network.
1
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Using Trace Network Selection in standalone script in ArcGIS Pro
The reason your output includes all the features is because you are using the CopyFeatures tool on the wrong "thing".
Golden rule for all geoprocessing tools is that they honour selections on LAYERS.
…
- 44.6k
2
votes
Accepted
ArcGIS Trace Geometric Network - Get/add sequence number for lines
In your image you have shown a non-branching scenario, a bunch of lines that you need to determine the sequence from your starting flag. Here is a solution that does not even necessarily use a geomet …
- 44.6k
3
votes
Using Trace geometric network in ArcPy script runs out of memory
You are mixing old style with newer style cursors, which may be an issue. Look at the code samples in the help file given here. Note they are using the newer cursors from the da module and are constr …
- 44.6k
1
vote
Trace upstream/downstream for multiple pairs of points in ArcMap
RivEX can link sites, assuming the network is not huge. But I doubt any tool will tell you if the relative direction is u/s or d/s. How do you measure if something is d/s of you, you could initially …
- 44.6k
1
vote
Arcpy code to loop trace geometric network give out of memory error
Consider these options:
Turning off geo-processing login
Setting the addOutputsToMap to false
Pausing the display speeds things up
As it appears you are processing hydrological data consider "chunki …
- 44.6k
2
votes
ArcGIS Trace Geometric Network Tool Trace using Find Common Ancestors gives error
I was able to run the find common ancestor trace using the geoprocessing tools on a geometric network. I was able to replicate the 001191 error message and reading the help on that it was clear that m …
- 44.6k
0
votes
Accepted
Count features on geometric network between two points
With a correctly configured geometric network you can use the Utility Network analyst toolbar to create a route between your start and end points. Then use the route in a select by location tool to se …
- 44.6k
3
votes
Accepted
How to detect geometric network issues (exhaustive check within extent), and repair them usi...
If an interface is not exposing what you want why not simply call the existing tool?
You can call existing geo-processing tools in ArcObjects using the IGeoProcessor interface. So you would create an …
- 44.6k
3
votes
Geometric Network trace in ArcGIS: trace downstream with loops included
RivEX can attribute your river network with loop ID's, see the help file here. You could then use your downstream trace to select polylines, as RivEX gives each loop family a unique ID you could simpl …
- 44.6k
3
votes
Accepted
Obtaining length of river upstream of points up to next point using ArcGIS Desktop?
RivEX does much if not all of what you are asking. For computing upstream length you would run the appropriate RivEX attribution tool to encode that into the network then transfer the lengths to your …
- 44.6k
1
vote
Unable to create geometric network on NHDFlowline - invalid enabled field type
The enabled field is a flag field which enables or disables an edge within the network. A disabled edge would be as if there was nothing there. This is all discussed in the help file here...
As you n …
- 44.6k
4
votes
Accepted
ArcGIS Geometric Network - Identify Indeterminate Flow
To my knowledge there is no tool that can do what you are asking, this needs to be done in a programmatic way. If you have VBA installed and licensed then the following code will select indeterminate …
- 44.6k
2
votes
Accepted
Finding distance up geometric network?
I would start by "reducing" your polygon to a point so its a point snapped to the network with the polygon ID. First problem is which point, what if your polygon intersects the network multiple times …
- 44.6k
1
vote
Using weight in geometric network to Find Path Upstream
Have you set the flow direction of the network? You need to run this tool. The Trace upstream should then behave. For the record I had to set the weight field (which was length) to be against the digi …
- 44.6k
3
votes
Accepted
Finding upstream locations (polygons) using ArcGIS Geometric Network?
If you have set the flow direction as @ChrisW mentions then the polylines should be flowing in a source to sea direction. Place your flag at the green location then using the Utility Network Analysts …
- 44.6k