(r3) VOTable15RFC < IVOA

IVOA Web>IvoaResReg>VOTable15RFC (revision 3) (raw view)~~EditAttach~~
---++ !VOTable 1.5 Proposed Recommendation: Request for Comments

VOTable is a standard for the interchange of data represented as a set of tables, and includes both table metadata and the data itself.
---++ Summary

*Latest Draft:* [[https://www.ivoa.net/documents/VOTable/20240213/][ VOTable 1.5]] (Proposed Recommendation)

The main purpose of VOTable 1.5 is to support =refposition= attribute analogous to TIMESYS.

VOTable 1.5 is a backward-compatible revision.

The other main differences between version 1.5 of VOTable and the preceding version 1.4 are:
<div title="Page 30">
   * COOSYS now has a =refposition= attribute analogous to TIMESYS.
   * The frame identifiers (=system= attribute) in COOSYS are now taken from the refframe IVOA vocabulary.
   * Clarifications and rewording on:
      * the meaning of =MIN= and =MAX= =value= attributes for array types.
      * removing the recommendation to use xmlns to do utype prefix binding.
      * timescales for calendar epochs.
      * positioning advice for =ID= and corresponding references.
      * noting that =RESOURCE= elements can contain =MIVOT= blocks.
      * =unit= attribute SHOULD conform to VOUnits, and correct examples accordingly.
See [[https://github.com/ivoa-std/VOTable/milestone/1?closed=1][GitHub]] for a full list of changes.&nbsp;</div>
---++++ To Do Upon Approval, Prior to Upload

   * Change version attribute in schema to "1.5"
   * In the document, set the \ivoatype to "IVOA Recommendation" and set the status text according to the official wording is in DocStd.
---++++ Future

The VOTableInfo page contains a list of proposed changes that, during the WD phase, were agreed to defer to a future version. When the document maintenance is transitioned to !GitHub, those item will be converted to !GitHub issues.
---++ 
---++ Reference Interoperable Implementations

   * %RED% [[https://aladin.u-strasbg.fr/java/nph-aladin.pl#Proto?frame=downloading][AladinProto]]: TIMESYS and COOSYS full support%ENDCOLOR%
   * %RED% 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%ENDCOLOR%
   * %RED% [[http://www.starlink.ac.uk/stil/][STIL]] v3.3-3/ [[http://www.starlink.ac.uk/stilts/][STILTS]] v3.1-6/ [[http://www.starlink.ac.uk/topcat/][TOPCAT]] v4.6-3 support VOTable 1.4 (PR-VOTable-1.4-20190604): 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 [[http://www.starlink.ac.uk/topcat/sun253/ColumnInfoWindow.html][column metadata]]. The same attributes are written out, though currently for TIMESYS only if output VOTable version is set to "1.4" ( -Dvotable.version=1.4). These applications don't do much with the information beyond making it visible, though (experimental) [[http://www.starlink.ac.uk/topcat/sun253/TimePlotWindow.html][time plots]] use the timeorigin and (in most cases) time units to offset temporal coordinates.%ENDCOLOR%

---++ 
---++ Implementations Validators

   * %RED% [[http://www.starlink.ac.uk/stilts/sun256/votlint.html][votlint]] from STILTS v3.1-6 validates VOTable 1.4, corresponding to PR-VOTable-1.4-20190604.%ENDCOLOR%

<span style="color: #630000; font-size: 18.85px; background-color: #f6f6f6;">Comments from the IVOA Community during RFC/TCG review period: </span>%RED%2024-02-01 - 2024-03-20%ENDCOLOR%

The comments from the TCG members during the RFC/TCG review should be included in the next section.

In order to add a comment to the document, please edit this page and add your comment to the list below in the format used for the example (include your Wiki Name so that authors can contact you for further information). When the author(s) of the document have considered the comment, they will provide a response after the comment.

Additional discussion about any of the comments or responses can be conducted on the WG mailing list. However, please be sure to enter your initial comments here for full consideration in any future revisions of this document

   * Sample comment by TWiki.WikiName
      * Response (by TWiki.WikiName)

---
---

---++ Comments from TCG members during the RFC/TCG Review Period: %RED%2024-03-01 - 2024-04-20%ENDCOLOR%

WG chairs or vice chairs must read the Document, provide comments if any (including on topics not directly linked to the Group matters) or indicate that they have no comment.

IG chairs or vice chairs are also encouraged to do the same, althought their inputs are not compulsory.

---+++ TCG Chair & Vice Chair

---+++ [[IvoaApplications][Applications Working Group]]

---+++ [[IvoaDAL][Data Access Layer Working Group]]

---+++ [[IvoaDataModel][Data Model Working Group]]

---+++ [[IvoaGridAndWebServices][Grid & Web Services Working Group]]

---+++ [[IvoaResReg][Registry Working Group]]

---+++ [[IvoaSemantics][Semantics Working Group]]

---+++ [[IvoaDCP][Data Curation & Preservation Interest Group]]

---+++ [[IvoaEducation][Education Interest Group]]

---+++ [[IvoaKDD][Knowledge Discovery Interest Group]]

---+++ [[IvoaOps][Operations Interest Group]]

---+++ [[IvoaRadio][Radio Astronomy Interest Group]]

---+++ [[IvoaSS][Solar System Interest Group]]

---+++ [[IvoaTheory][Theory Interest Group]]

---+++ [[IvoaVOEvent][Time Domain Interest Group]]

---+++ [[IvoaStdsDocsProc][Standards and Processes Committee]]

---

---++ TCG Vote%RED%<br />%ENDCOLOR%

If you have minor comments (typos) on the last version of the document please indicate it in the Comments column of the table and post them in the TCG comments section above with the date.

| Group | Yes | No | Abstain | Comments |
| TCG | | | | |
| Apps | | | | |
| DAL | | | | |
| DM | | | | |
| GWS | | | | |
| Registry | | | | |
| Semantics | | | | |
| DCP | | | | |
| Edu | | | | |
| KDIG | | | | |
| Ops | | | | |
| Radio | | | | |
| SSIG | | | | |
| Theory | | | | |
| TD | | | | |
| <nop>StdProc | | | | |
Topic revision: r3 - 2024-02-23 - AdrianDamian
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