Cdaweb vs omniweb manual#
So to answer the question of whether our desired workflow (load positions and magnetic fields generate a model, compare to observations) can be achieved using these data access method: CDAWeb, maybe? HAPI and DAS 2, probably not without manual intervention to set at least the coordinate systems to what GEOPACK is expecting.We don’t yet have a sense of what is typically available in common practice. The DAS 2 interface control document seems to be able to accommodate arbitrary attributes attached to data quantities, but the SPEDAS development team has only worked through a few example data sets.HAPI (at least as implemented in SPEDAS) provides units and certain other metadata, like bin centers and boundaries, but no way to directly access other parameter attributes.The user would need to manually add that information before passing it to a field model or transforming to a different choice of coordinates.
For example, COORDINATE_SYSTEM is optional, and some data sets do not specify it as a variable attribute. CDAWeb serves ISTP-compliant CDFs, however, some useful non-ISTP attributes may or may not be included depending on what the original data source provided.
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