elevation.cache#

Attributes#

`build_vrt`(root, product)	Build the `<product>.vrt` mosaic over the non empty cache tiles.
`ensure_setup`(root)	Create the product folder and its `cache` subfolder.
`ensure_tiles`(root, tiles, prepare_tile[, ...])	Fetch and cache tiles, skipping the tiles already in the cache.
`is_cached`(root, tile_name)	Return whether tile_name is cached, empty tiles included.
`lock_tiles`(datasource_root, tile_names)
`lock_vrt`(datasource_root, product)
`resolve_cache_dir`(cache_dir)	Return the DEM cache folder to use, as an absolute path.

elevation.cache.build_vrt(root, product)#: Build the <product>.vrt mosaic over the non empty cache tiles.

elevation.cache.ensure_setup(root)#

Create the product folder and its cache subfolder.

The spool folder is created on demand by the cache write.

elevation.cache.ensure_tiles(root, tiles, prepare_tile, gdal_options=spatial.INT_TILE_GDAL_OPTIONS, empty_on_notfound=True, **kwargs)#

Fetch and cache tiles, skipping the tiles already in the cache.

prepare_tile returns the GDAL source of the tile, that is read in place and written to the cache as a GeoTIFF.

elevation.cache.is_cached(root, tile_name)#: Return whether tile_name is cached, empty tiles included.

elevation.cache.resolve_cache_dir(cache_dir)#

Return the DEM cache folder to use, as an absolute path.

The cache_dir argument takes precedence over the EIO_CACHE_DIR environment variable, that takes precedence over the CACHE_DIR default.