MerginMaps / MerginMaps/docs

How to use relations based on position

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Forks
22
Avg merge
5d 11h
Merged PRs (30d)
9

Description

Use case: when recording a point within a polygon, they can be automatically joined using relations, so that there is no need to manually select the parent feature.

This can be done using default values for relation reference field / using an expression (overlay_* functions) that finds parent feature based on the position of the point and then use its uuid as default value.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No file or test is named. Start by locating the documentation section covering relations, default values, and overlay_* expressions, then verify the point-in-polygon workflow in QGIS. Done means documenting how to configure the relation reference field so a point automatically receives its parent polygon's UUID.

Written by the indexing model from the issue text.

Assessment

Domain
documentation
Issue type
Documentation
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
55/100

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