How do you determine which portal a control field is created from?

How do you determine which portal a control field is created from? - From above of unrecognizable person in socks standing on electronic weighing scales while checking weight on parquet during weight loss

I'm currently a L10 agent but until missions started I didn't really care where a Control Field was created from and this recently came up during a conversation. I'm trying to figure out which portal a control field is created from.

Given:

  • We have portals A, B & C.
  • We have already linked A to B
  • While sitting at C we link C to A and we link C to B

My assumption would be that the Control Field would be created at portal C but I am not certain. This should be deterministic.

I am going to do some testing of theories related to this and I'll report back.






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What is the Control Field?

In redistricting, a control field is the primary field being balanced in a redistricting plan. Population is typically the control field for political redistricting as political districts are required to have equal populations.

How to create Control Field ingress?

To create a Control Field \u0394, three Portals must be linked in a triangle. The three Portals used are often called Anchors. Portals inside the Control Field \u0394 can only be linked from Portals that are used for the anchors.



Creating Control Fields in Ingress




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Images: Andres Ayrton, Allan Mas, Julia Larson, Anubhaw Anand