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test: add declination table to map layout BM-1636#30

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feat/add-declination-table-to-map-layout
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test: add declination table to map layout BM-1636#30
tawera-manaena wants to merge 1 commit into
masterfrom
feat/add-declination-table-to-map-layout

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@tawera-manaena

@tawera-manaena tawera-manaena commented Apr 20, 2026

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This piece of work closely relates to this pull request.


Motivation

The magnetic declination panel tells map users the difference between grid north and magnetic north for this map sheet, including the rate of change over time. This is critical information for users navigating with a compass. Replicating this in QGIS ensures the panel is dynamically generated from accurate, location-specific data rather than manually authored, reducing the risk of error and the burden on cartographers.

Modifications

  • map-series/nztopo50/

    • nztopo50.qgs

      • I've appended the set of project-scope variables required to generate the magnetic declination component. For a given map sheet, the intent is to inject each variable's value code-side, and then consume it in the map layout at runtime.

        Image
      • I've added a table component to the map layout so that each new variable's value is visible.

        Image

Verification

I attempted to run a Map Production workflow (Argo). However, I ran into an issue.

@tawera-manaena tawera-manaena changed the title feat: add declination table to map layout BM-1636 test: add declination table to map layout BM-1636 Jun 1, 2026
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