Loads RDD of rasters using the input module specified in the arguments.
Loads RDD of rasters using the input module specified in the arguments. This RDD will contain rasters as they are stored, possibly overlapping and not conforming to any tile layout.
Input key type
Input raster value type
Saves provided RDD to an output module specified by the ETL arguments.
Saves provided RDD to an output module specified by the ETL arguments. This step may perform two to one pyramiding until zoom level 1 is reached.
Key type with SpatialComponent corresponding LayoutDefinition
Tile raster with cells from single tile in LayoutDefinition
Layout ID to b
Tiled raster RDD with TileLayerMetadata
Function to be called for saving. Defaults to writing the layer. This gives the caller an oppurtunity to modify the layer before writing, or to save additional attributes in the attributes store.
Tiles RDD of arbitrary rasters to conform to a layout scheme or definition provided in the arguments.
Tiles RDD of arbitrary rasters to conform to a layout scheme or definition provided in the arguments. First metadata will be collected over input rasters to determine the overall extent, common crs, and resolution. This information will be used to select a LayoutDefinition if LayoutScheme is provided in the arguments.
The tiling step will use this LayoutDefinition to cut input rasters into chunks that conform to the layout. If multiple rasters contribute to single target tile their values will be merged cell by cell.
The timing of the reproject steps depends on the method chosen. BufferedReproject must be performed after the tiling step because it leans on SpatialComponent to identify neighboring tiles and sample their edge pixels. This method is the default and produces the best results.
PerTileReproject method will be performed before the tiling step, on source tiles. When using this method the reproject logic does not have access to pixels past the tile boundary and will see them as NODATA. However, this approach does not require all source tiles to share a projection.
RDD of source rasters
Resampling method to be used when merging raster chunks in tiling step