alsdb.processing.chm.compute_dsm

alsdb.processing.chm.compute_dsm(provider: TileDBProvider, store: ALSZarrStore, resolution: float = 1.0, first_returns_only: bool = True, bbox: tuple[float, float, float, float] | None = None, year: int | None = None, *, overwrite: bool = False, tile_size: float = 500.0, n_workers: int = 1) → None

Rasterize maximum return elevation to a DSM and write into store.

Parameters:

• provider – TileDB provider instance.

• store – ALSZarrStore target.

• resolution – Grid cell size in metres.

• first_returns_only – Use only first returns for a clean canopy-top signal.

• bbox – Optional spatial filter (min_x, min_y, max_x, max_y).

• year – Survey year filter.

• overwrite – If False (default) and DSM data for year already exists in the store, the computation is skipped.

• tile_size – Sub-tile width/height in metres (default 500 m).

• n_workers – Parallel workers (default 1 = sequential).