Documentation
Class diagram : Overview of packages used
This is a general View of the Observation DM.
The Core Components Observation data model will use only a subset of the classes required for most of the use-cases built-up,dor data discovery and retrieval.Classes from existing packages like
Characterisation or Spectrum( in white).
Colored packages are currently defined in the DM WG and will be developped
in coordination with this core model effort as well.
Class diagram : Observation re-use of Characterisation interacts (1)
This class diagram covers all classes used in the context of the Observation Core components Model.
The Characterisation classes, describing how the data span along the main physical axes, are used
here partly, and only the attributes relevant to this modeling effort are shown here.
This is also the case for the DataID and Curation classes extended from the Spectrum/SSA data model.
The classes describing the physical axes of an observation contains the metadata used as search criteria when building a query.
We re-use the Characterisation data model down to the Support level (level4) .
Description of the SSA protocol:
http://www.ivoa.net/Documents/REC/DAL/SSA-20080201.html
Class diagram : Mapping and WCS for an Observation
This diagram shows the information needed to compute world coordinates from the numerical values obteined along each characterisation axis.
Class diagram : Observation Types