Igor,
Much of the effort to work on 3 (and higher dimensional) data has been done (althought it is not finished).
I would point you to the Quantity Data model which is designed to hold 3 dimensional data (in the Matrix Quantity). References may be found on the twicki page as well as schema, examples at the following URLS:
http://hea-www.harvard.edu/~jcm/vo/docs/
=brian
On Thursday 17 February 2005 03:01 pm, Igor Chilingarian wrote:
> Hello Doug,
>
> Today I discussed with Francois some questions concerning 3D data model
>
> Your idea about science case driven approach is a perfect proposition.
>
> I have a kind of plan for what to do for a moment:
> 1) Define clearly the science case for IFU data I'm working on: studies of
> stellar populations in nearby galaxies using absorption-line spectra
> 2) During the next week hopefully we'll have two science cases formulated
> for Fabry-Perot data: studies of the gaseous kinematics in disc
> galaxies, and studies of gaseous shells (SN remnants) in nearby
> galaxies. I asked scientits working with this type of data to describe
> these cases.
>
> Each of these science cases will be presented as a short part of text (15-20
> lines) including scientific objectives and brief description of the scientific
> data processing with the requiremets about the descripition of the data.
> It should help to figure out the requirements for the 3D data model, and
> for 3D data access layer. We'll probably need the same to be done for
> other 3D data types, but I don't know personally people working with radio
> and X-ray cubes.
>
> 3) As Francois proposes me, I'll try to add the necessary features to the
> Characterisation data model to be able to deal with the IFU data.
> I'll do my best to finish this (with a help of Francois) before the
> end of March
> 4) At this point it will be clear (hopefully) what we need to have in the
> 3D data model, and whether we need it separated from more general DMs
> (Characterization and Observation), and it would be possible to start
> the real work on the document draft.
>
> Do you agree on such a plan?
>
> With best regards,
> Igor
>
-- -------------------------------------- | | Dr. Brian Thomas | | Dept of Astronomy | University of Maryland-College Park | | Phone: (301) 405-2312 | Fax: (301) 314-9067 | --------------------------------------Received on 2005-02-17Z20:31:50