Function source

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

def compute_centroid_lon():
    """Centroid longitude in WGS84 (decimal degrees, 6 d.p. ≈ 11 cm)."""
    return """
        SELECT l.id, ROUND(ST_X(ST_Transform(c.albers, 4326))::numeric, 6)::float8 AS computed
    """ + _CENTROID_LATERAL + " ORDER BY l.id"

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