Guidance Required for Sector-wise Neighbor Creation Based on Azimuth in QGIS

[Usnish Bose]

Dear QGIS Support Team,

I hope you are doing well.

I am looking to create a sector-wise neighbor relation layer in QGIS based on azimuth values and would appreciate your guidance on the best approach.

My requirements are as follows:

• I have a layer containing cellular sectors with attributes such as Site ID, Sector ID, Latitude, Longitude, and Azimuth.
• I need to identify and create neighbor relationships sector-wise rather than site-wise.
• The neighbor selection should be based on factors such as:
  • Sector azimuth alignment
  • Distance between sectors/sites
  • Coverage direction (sector facing)
• The output should generate a neighbor relation table/layer indicating:
  • Serving Sector
  • Neighbor Sector
  • Distance
  • Relative Bearing/Azimuth Difference

Could you please advise:

1. Whether this can be achieved using native QGIS tools or requires a custom script/plugin.
2. Which QGIS processing tools would be most suitable for this workflow
3. If there are any existing plugins or examples available for sector-wise neighbor generation based on azimuth and distance criteria.
4. 
   

Your support and recommendations would be highly appreciated.

Thank you for your assistance.

Best Regards,

Usnish Bose
9088008977

Network Engineer (Ericsson Global)

[Ujaval Gandhi]

Hi Usnish,

I have done similar work in a few different contexts and it is possible natively in QGIS using expressions. 

Find neighbor relations. https://www.youtube.com/watch?v=c7lXotTM7vk

For constraining relations in neighbor selection (i.e. select by sector) see https://www.youtube.com/watch?v=pZngnDCDoEk

You can also add constraints based on using azimuth and distance, as shown in this video https://www.youtube.com/live/IraiAF4s5Tg?si=oJvlLs53Y81M1PFc&t=2465

Aggregate expressions are quite powerful but takes a but of time to develop an intuition for using them for your specific purpose. Hope the above resources help.

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Ujaval Gandhi

Spatial Thoughts

www.spatialthoughts.com