Function source

This is read live from inventory/derived.py via inspect.getsource(); what you see is exactly what runs.

def compute_polygon_area():
    """Per-polygon area in EPSG:3338 (NAD83 / Alaska Albers, equal-area).

    Computed via PostGIS `ST_Area(ST_Transform(geom, 3338))` for accuracy
    at high latitudes — Mercator-based areas can be off by 4-6× at Alaskan
    latitudes. Rounded to whole square meters so re-applies are idempotent.

    Writes to landslide_polygons.area; consumed by area_body / area_source /
    area_deposit (which sum these by role).
    """
    return """
        SELECT id,
               ROUND(ST_Area(ST_Transform(geom, 3338))::numeric, 0)::float8 AS computed
        FROM landslide_polygons
        ORDER BY id
    """

Proposed changes

All rows already match this rule — nothing to apply.