Produce all pyramid levels from start and end zoom.
Produce all pyramid levels from start and end zoom.
The first entry in the result stream is the tuple of rdd
and startZoom
.
The RDDs of pyramid levels have a recursive dependency on their base RDD.
Because RDDs are lazy take care when consuming this stream.
Choose to either persist the base layer or trigger jobs
in order to maximize the caching provided by the Spark BlockManager.
RDD key type (ex: SpatialKey)
RDD value type (ex: Tile or MultibandTile)
Metadata associated with the RDD[(K,V)]
the base layer to be resampled
the scheme used to generate next pyramid level
the pyramid or zoom level of base layer
the pyramid or zoom level to stop pyramid process
the options for the pyramid process
[up]
Resample base layer to generate the next level "up" in the pyramid.
Resample base layer to generate the next level "up" in the pyramid.
When building the next pyramid level each tile is resampled individually, without sampling pixels from neighboring tiles. In the common case of ZoomedLayoutScheme, used when building a power of two pyramid, this means that each resampled pixel is going to be equidistant to four pixels in the base layer.
RDD key type (ex: SpatialKey)
RDD value type (ex: Tile or MultibandTile)
Metadata associated with the RDD[(K,V)]
the base layer to be resampled
the scheme used to generate next pyramid level
the pyramid or zoom level of base layer
the options for the pyramid process