What is the best way to process data – one pass per data layer using all tiles or one pass per tile for each layer?
There is not one best way as it depends on a number of factors that have to be taken into account before deciding on the best course of action. These factors include: • The ability of the transformation software to handle certain data sizes. It may be that the optimum transformation size is a chunk of data somewhere between tile size and the whole area. • The way in which data is handled at tile edges by the transformation software. • The quantity and type of your data assets. • Your quality assurance processes that are needed to inspect the data after transformation. • The amount of time your data, or a portion of it, can be withheld from general use. • The correlation between your layers of data. Whether there are different business rules for each data layer. • Whether different layers require different transformation algorithms.
