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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.
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
2
votes
Accepted
How to make list of nodes at end points of polylines that connect them to others using ArcGI...
There are several ways to achieve this. You could build a coverage dataset, it's attribute table will store the logic of the network. You could download ArcHydro and this too will extract out the logi …
- 44.6k
1
vote
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
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
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
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
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
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
2
votes
Find the next vertices at the intersect line
You tag this question as a python question so assuming you are using 10.1 then looking at the page on Polyline geometry in the Help file it shows that Polyline has a method called getPart which return …
- 44.6k
1
vote
How to check if Waste-Water Manhole connect to lines with the right flow direction?
A way of doing this is to cycle through your man hole dataset, use each point to select the polylines then test if your man hole point equals the last point of the polyline, if it does then the polyli …
- 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
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
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
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
4
votes
Stream Trace to Select Attributes
From the look of your screen shot it looks like you have used the utility network analyst toolbar and the Trace Upstream option? So... not ArcHydro?
If this is correct then click on the down arrow n …
- 44.6k