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 ...

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3
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1answer
164 views

How to set waste water gravitational flow direction using DEM automatically?

I have a Geometric Network of Waste Water and I need to set line digitize direction according to the gravitational flow direction using a DEM. I'm trying to avoid flipping manually 1000 Km of ...
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0answers
59 views

Deleting network features in python script doesn't create net junctions

I have a script that makes a copy of a network dataset for a 3rd party app to use. One of the junction feature classes causes problems with the app. The ideal solution would be to remove it from the ...
5
votes
2answers
384 views

What is the algorithm used by ESRI for finding loops in a geometric network?

I've been trying to develop some code for ArcMap (VB .net) that would take a river network, identify and label the loops. These loops can be simple bifurcations or highly thread braided channels. I ...
0
votes
1answer
151 views

Find the next vertices at the intersect line

I'm Trying to calculate the angle between two intersected lines at geometric network (simple edge)in order to check if the lines are close to be perpendicular. I already have an Array of the ...
2
votes
1answer
511 views

How to get a city road network as line segments?

I want to have road-network information of different cities(New York for example) in the format of line segments(i.e. every road is represented by segment(s)). I want this for experimental purposes in ...
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votes
2answers
58 views

how can I find sDNA toolbox for arcgis?

I am working on spatial structure of the city and security. I need the sDNA Toolbox to add in gis toolboxes. please help.It is a real emergency.
1
vote
1answer
728 views

Determine use of pipes in a geometric network

I am trying to understand how to use the Geometric Networks in ArcGis 10.1 For the purpose of my experiment, I built a simple network composed of a few connected pipes, one source (left triangle) and ...
0
votes
1answer
103 views

merge national hydrography dataset files

I'm having difficulty merging datafiles from the NHD while still keeping functionality as a geometric network. I'm using ArcGIS 10.1, so the USGS merge tool isn't an option. Using the medium ...
1
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0answers
334 views

arcpy & TraceGeometricNetwork return ERROR 000584

I am developing a script to automate the creation of a road network following varying criteria. I have created a geometric network and I would like to get the connection between several points with ...
0
votes
1answer
208 views

Geometric Network Error

May I know where I made a mistake? I Already have to refer to the following link http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//003n0000000r000000 and I have also attached an ...
5
votes
1answer
1k views

Where can I find High Quality Road Network Information

I am carrying out a research on how complex city road networks get and I need to get accurate map information. I started with openstreetmaps however I ran into a couple of issues: some of the dumps ...
1
vote
0answers
93 views

How to get partial polyline from stream trace?

I am creating SOE to do stream trace. That works fine. The geometric network only have NHD flowline. The problem is that tracing result return whole flow line. I am wondering if the result only return ...
2
votes
0answers
195 views

Assign Sink ID to upstream features in a geometric network

Looking for a way to automatically assign an 8-character Sink ID to every upstream feature in a geometric network. There are over 500 sinks and about 5000 points and lines upstream from those sinks. ...
3
votes
0answers
217 views

Is it a bad idea to use a geometric network for road editing?

I am producing a road map (for print and online). I was thinking of using creating a geometric network with my roads, for editing purposes mainly, but I would like to know any critical downsides of ...
2
votes
1answer
282 views

ArcGIS 10 (SP 3) - Geometric Network - which features are moved?

In ArcGIS 9.3 Geometric Network, you can select which features can be moved when snapping. In ArcGIS 10 (SP 3) this functionality has disappeared and you either choose to have snap tolerance or not. ...
1
vote
1answer
346 views

Can we create relationship classes based on a geometric network?

I have a point Feature Class and a polyline Feature class which I connected in a geometric network. I also need to connect them logically. In my theoretical model, an edge is defined by the two points ...
3
votes
1answer
210 views

ArcObjects/VBA to python Network edge to junction lookup IEdgeFeature equivalent in arcpy

In an effort to migrate a script that transfers attributes from a geometric network to a feature class (on a given network edge segment, what are the up and downstream junctions?) I would like to ...
2
votes
0answers
202 views

Bug in ArcGIS Spatial Adjustment with Geometric Networks?

I am trying to do spatial adjustment between two datasets as shown in the the figure below. The Pipe line(selected(green color)) is part of a Geometric Network. It has three vertices. When I ...
4
votes
2answers
888 views

Unable to create a geometric network in a PostgreSQL Spatial Database Connection

I've created in ArcCatalog a Spatial Database Connection to an PostgreSQL database server. I've imported there all my data (from a local hard drive) and now I want to edit them. But apparently I ...
6
votes
1answer
4k views

Analyzing Flow direction in Geometric Networks in ArcGIS

I have a task in ArcGIS which involves using Geometric Network and right now I am experimenting with Set Flow direction function from Utility Network Analyst toolbar in ArcMap. I've read section Flow ...
4
votes
0answers
187 views

How to assign attributes from hydrologic sinks to upstream features? [closed]

I have a large hydrology geometric network with more than 300 sinks and roughly 150 barriers. I'd like to have the SinkID added to the attributes of the barriers (some individual networks have a ...
5
votes
1answer
815 views

Geometric Network - Listening to network feature connection changes in the IObjectClassEvents::OnChange event

I need to be able to tell when a particular type of feature, that participates in a geometric network, is having its geometry automatically modified due to the geometric network. What i mean is that ...
5
votes
2answers
724 views

How to identify polylines with multiple end/starting points?

I'm looking for a way to programmatically identify polyline features which do not represent a 'simple' line from A to B but instead have several starting and/or end points. These are called complex ...
3
votes
1answer
261 views

Can a Geometric network be hosted in a Spatial Data Service?

I'm wanting to deploy a geometric network to Sql Azure, where clients can trace through it. The Spatial Data Services Deployment Utility allows me to deploy each featureclass from a geometric network ...
10
votes
1answer
2k views

Difference between network dataset and geometric network in ArcGIS Desktop?

In ArcGIS Desktop, what is the difference between a "network dataset" and a "geometric network"? Are there differences with what can be done with each?