Indicate chunking scheme of an asset #1365
Description
In the STAC+Zarr Community Sprint in Rome we have discussed to indicate the inherent chunking scheme (chunk grid) of an referenced array in an assets. This shall facilitate the selection of an asset in case of the same data is provided in different chunking schemes. Chunking schemes can be optimised for various data access patterns such as efficient access to single raster bands, time-series or trajectories. The initial proposal was to directly indicate the chunk shape in the asset. However, it was identified that doing so, will not fully support users in discovering the needed data. Therefore the following proposal is made:
- Make use of roles to depict the chunking scheme
- Add a new attribute to the asset object
- Adopt the datacube extension to indicate the chunking scheme