Hello,
I'm working on an electrical network with substations and feeders.
I want to assign a number to each feeder using NetworkTopologyCalculator, grouped by substation name.
What I get
What I want to achieve
Many thanks in advance
Solved
Group Processing not working in NetworkTopologyCalculator
+4- Contributor
Best answer by takashi
A possible way to achieve the result illustrated in this screenshot is,
create a custom transformer wrapping a NetworkTopologyCalculator, and define a user parameter linking to the pre-defined "Group By" transformer parameter in the custom transformer definition.
The custom transformer definition looks like this.
You can right-click on the "Group By" transformer parameter and select Create User Parameter to add the user parameter linking to the pre-defined "Group By". See also the attached workspace example.
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+43- Influencer
Hi
If I understand correctly, I think, before this step, you could assign an id to the points from the polygon (substation?) using a spatial overlay like the SpatialRelator or PointOnAreaOverlayer. Then you could use the group by. Did I understand correctly? I hope this helps.
At your rest service ^B
+4- Contributor
Tank you @crutledge for your quick reply.
In the screenshot above, I created a point with the name of each feeder so that I could later assign them to the linear sections.
I used the "code_pt" attribute as a group, which is the coding of the substations: DSFN_JALLO & DSFN_TAPPA.
What I noticed is that the NetworkTopologyCalculator transformer requires that the feeders connect to a single point at each substation. If grouped with code_pt, I get:
I'm a little confused by the results found.
Hi
NetworkTopologyCalculator adds an identical Network ID to topologically connected network lines. In your case, regardless of whether you set substation code to the Group By parameter or not, the result should be the same - Network ID = 1 for one, Network ID = 2 for another, since there are two connected networks.
Why not inspect features with Visual/Data Preview and Feature/Record Information before writing them into a destination dataset?
However, the result shown in your first screenshot (attached below again) looks strange indeed, if all the network lines have the attribute called “code_pt” (value = “DSFN_JALLO” or “DSFN_TAPPA”) and you have set “code_pt” to the Group By parameter in the NetworkTopologyCalculator.
Possibly the group processing of NetworkTopologyCalculator is not working as intended. Can you please take a look at this?
Why not inspect features with Visual/Data Preview and Feature/Record Information before writing them into a destination dataset?
After some quick testings, I think I can understand how the group processing of NetworkTopologyCalculator works.
It seems that the group processing works to differentiate lines belonging to a topologically connected network into groups, not make the sequence of network ids independent for each group. It’s unlike the group processing in Counter.
Hopefully this screenshot illustrates how it works.
Why not inspect features with Visual/Data Preview and Feature/Record Information before writing them into a destination dataset?
+4- Contributor
Very clear
However, I don't think the transformer NetworkTopologyCalculator can solve this issue. I'll try to look for other alternatives.
Best regards
+43- Influencer
Hi
- Best Answer
A possible way to achieve the result illustrated in this screenshot is,
create a custom transformer wrapping a NetworkTopologyCalculator, and define a user parameter linking to the pre-defined "Group By" transformer parameter in the custom transformer definition.
The custom transformer definition looks like this.
You can right-click on the "Group By" transformer parameter and select Create User Parameter to add the user parameter linking to the pre-defined "Group By". See also the attached workspace example.
Why not inspect features with Visual/Data Preview and Feature/Record Information before writing them into a destination dataset?
+4- Contributor
Many thanks
I also thank
Best regards