...
Usually, operators process one tile after the other. But sometimes surrounding data is needed to process the data for the target tile. This is the case for example when reprojecting data or if the algorithm averages several pixels or computing the location of the shadow of a cloud. In such cases data from adjacent tiles need to be loaded and therefor tiles are accessed multiple times. It is good to have the data cached to prevent multiple computation computations of the input data.
Rule 2: Tile Stack
If an operator computes the full tile stack of the output bands at once then it is good to cache this output. The computation of this stack is usually expensive. And therefore we should cache this data too.
A list of operators that implement the computeTileStack method can be found in the attached TileStackOperators.txt file.
| View file | ||
|---|---|---|
|
Rule 3: Multiple Subsequent Operators
...