MCT - model document delivery.
mdittmar at cfa.harvard.edu
Fri Sep 4 16:52:27 CEST 2020
My apologies for the delay in announcing these. A few weeks ago, I
delivered updates to the STC-2.0 component models to the IVOA repository.
I neglected to provide the updated schema and vo-dml products, so will need
to follow-up on that.
Below is the current status of the models:
* all models have corresponding example file suite serialized in
(VOTable, AnnotatedVOTable, XML) in volute
* for Meas and Coords, I'd say these are about as far as I can take
them.. the TCG is looking for more hands-on application before approving
the models, that depends on external (ie 'not me') implementations being
developed and providing feedback.
Coords-1.0 <http://www.ivoa.net/documents/Coords/20200310/index.html> (
* updated to RFC comments
* made formal comparison of the model against AstroPy
o posted to STC2 twiki page
+ comparison writeup (pdf)
+ comparison diagram (png)
o Epoch: astropy includes epoch as a representation of Time, while the
Coords model does not include it under TimeStamp
** we don't necessarily need to, but thought I'd point it out.
o Space-centric Point
** these were specifically requested to be removed during RFC, but
Astropy does include them (and Frame-centric interfaces), and MANGO model
development has expressed that these maybe should exist.
Meas-1.0 <http://www.ivoa.net/documents/Meas/20200413/index.html> (
* Updated to RFC comments
o I don't believe there are open topics here..
Trans-1.0 <http://www.ivoa.net/documents/WCSTrans/20200803/index.html> (
* Updated with internal review comments, and to make use of Meas model
* Topics: there are a few open suggestions from the author review which
I thought could wait to implement after broader review
o "Unit" transform: rename "Identity" to avoid name clash with 'units'
o M,N in Matrix transform -> row, column
o specifically mention that this model does NOT cover the
frame/property/representation level of transforms
+ equatorial -> galactic
+ energy -> wavelength
+ date -> mjd
+ FITS paper IV: time transformations
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