VOTable 1.4 Proposed Recommendation: Request for Comments


Latest Draft: VOTable 1.4 (Working Draft)

The substantive differences between version 1.4 of VOTable and the preceding version 1.3 are:

• Applying erratum VOTable 1.3-1, un-deprecating COOSYS.
• Applying erratum VOTable 1.3-2, permitting F0 in precision.
• Applying erratum VOTable 1.3-3, clarifying the meaning of arraysize="1".
• Add a new TIMESYS element as a simple means for supplying metadata for time values in the VOTable.

Reference Interoperable Implementations

  • AladinProto: TIMESYS and COOSYS full support
  • DaCHS 1.2.6 (beta) produces TIMESYS. Deployed services serving time series with TIMESYS include ivo://org.gavo.dc/gaia/q2/dr2epochflux, ivo://org.gavo.dc/bgds/l/ssa, and ivo://org.gavo.dc/k2c9vst/q/ssa, as well as the datalink-linked datasets from the gaia.dr2epochflux, bgds.ssa_time_series, and k2c9vst.timeseries tables in http://dc.g-vo.org/tap
  • STIL v3.3-3/STILTS v3.1-6/TOPCAT v4.6-3 support VOTable 1.4 (WD-VOTable-1.4-20190403): COOSYS and TIMESYS elements are ingested and the relevant properties are attached to columns in the internal table data model, and can be seen in the library/application column metadata. The same attributes are written out, though currently for TIMESYS only if output VOTable version is set to "1.4". These applications don't do much with the information beyond making it visible, though (experimental) time plots use the timeorigin to offset temporal coordinates.

Implementations Validators

  • votlint from STILTS v3.1-6 validates VOTable 1.4, corresponding to WD-VOTable-1.4-20190403, with the correction that the TIMESYS timeframe and refposition attributes have RDF vocabularies at URIs http://www.ivoa.net/rdf/... and not http://ivoa.net/rdf/...

Comments Prior to Official RFC Period

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Topic revision: r5 - 2019-05-09 - MarkTaylor
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