<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Dear colleagues,<div class=""><br class=""></div><div class="">during the discussions at IVOA last week, Pierre Le Sidaner and I have mentioned our need for updates in the VOEvent 2.0 schema, in order to fit our needs in Solar and Planetary sciences. We have prepared a draft VOEvent 2.1, trying to make sure it stays fully compliant with VOEvent built with version 2.0 of the schema. We would be grateful to have your view on this proposed draft version. The main changes are recalled below (but are available as comments in the XML schema file):</div><div class=""><br class=""></div><div class=""><div style="margin: 0px; line-height: normal; color: rgb(0, 116, 0);" class="">Revision 2.1 2017/11/02 BaptisteCecconi<span style="color: #000000" class=""><br class="">
</span>- added "AuthorURI" in "Who"<span style="color: #000000" class=""><br class="">
</span>- removed restricted list of "AstroCoordSystem": previously "idValues" type, now "xs:string"<span style="color: #000000" class=""><br class="">
</span>- removed "idValues" type (and references)<span style="color: #000000" class=""><br class="">
</span>- added annotation in "AstroCoords/Time" (according to STC-1.30)<span style="color: #000000" class=""><br class="">
</span>- added "AstroCoords/PositionName" as "xs:string"<span style="color: #000000" class=""><br class="">
</span>- added annotation to "AstroCoords/Position2D" (according to STC-1.30)<span style="color: #000000" class=""><br class="">
</span>- removed restricted list of attribute "coord_system_id" in "AstroCoords": previous type=idValues (removed), new type=xs:string<span style="color: #000000" class=""><br class="">
</span>- added "TimeInterval" of type "TimeInterval" in "Time"<span style="color: #000000" class=""><br class="">
</span>- added "TimeOrigin" of type "xs:string" in "TimeInstant"<span style="color: #000000" class=""><br class="">
</span>- added "TimeInterval" type with "StartTime" and "StopTime" elements<span style="color: #000000" class=""><br class="">
</span>- changed minOccurs attribute in "Position2D/Error2Radius": now set to 0<span style="color: #000000" class=""><br class="">
</span>- added "Error2" element in "Position2D" with type "error2" and minOccurs=0<span style="color: #000000" class=""><br class="">
</span>- added "Error3" element in "Position3D" with type "error3" and minOccurs=0<span style="color: #000000" class=""><br class="">
</span>- added "coord_value" type introducing "ucd" and "unit" attributes for C1, C2 and C3 elements<span style="color: #000000" class=""><br class="">
</span>- added "error2" type, with "C1" and "C2" elements<span style="color: #000000" class=""><br class="">
</span>- added "error3" type, with "C1", "C2" and "C3" elements<span style="color: #000000" class=""><br class="">
</span>- added "TimeFrameType" (taken from to STC-1.30) <span style="color: #000000" class=""><br class="">
</span>- added "SpaceFrameType" (taken from to STC-1.30)<span style="color: #000000" class=""><br class="">
</span></div></div><div class=""><br class=""></div><div class="">The presentations of Pierre Le Sidaner at the last 2 interop meetings contain the rationale for the changes, but we can prepare a more detailed document, if we decide to proceed.</div><div class=""> </div><div class="">Sincerely</div><div class="">Baptiste Cecconi</div><div class=""><br class=""></div><div class=""></div></body></html>