During the Geospatial Track discussions at ApacheCon last week, it was suggested that I forward relevant announcements to this list.
This call for comments is particularly relevant as we spent some time talking about CRS WKT in the track last week. This is a request for comments on so called WKT CRS2 http://www.opengeospatial.org/standards/requests/177 <http://www.opengeospatial.org/standards/requests/177> George > > <http://mail.opengeospatial.org/lists/lt.php?tid=fR4GBVVbUAUAAR0ABA9XSFAGVgcZCQRSDRlaVlcFWgJRA1NRXVBKVFNVBlMBAARIUwAFBBkEVAcNGVtRV1YVUwwEUg0EB1RdAAAHGQdeWV0GVABWGQhXAFEZDVVUBhVWAVQHGVEBDwZVVQUEVgkAUg> > > OGC requests comment on candidate standard: Geographic Information — Well > Known Text Representation Of Coordinate Reference Systems > > New edition is aligned with the coordinate reference systems described in ISO > 19111:2018, including dynamic geodetic reference frames, three-dimensional > projected coordinate reference systems, datum ensembles, and coordinate > metadata. > > > <http://mail.opengeospatial.org/lists/lt.php?tid=fR4IUVJRUAFeUB1dU1sFSFBVVgQZCQdcBhkNV1BVWw9XVwlXV1VKVFNVBlMBAARIUwAFBBkEVAcNGVtRV1YVUwwEUg0EB1RdAAAHGQdeWV0GVABWGQhXAFEZDVVUBhVWAVQHGVEBDwZVVQUEVgkAUg> > Contact: [email protected] <mailto:[email protected]> > 4 October 2018: The Open Geospatial Consortium (OGC) seeks public comment on > the candidate standard jointly developed by the International Organization > for Standardization (ISO) and the Open Geospatial Consortium: “Geographic > Information - Well-Known Text representation of coordinate reference systems” > (CRS WKT). > > Well-Known Text (WKT) > <http://mail.opengeospatial.org/lists/lt.php?tid=fR4BVgFSBABSBR0GVgpSSFBVDw4ZUggGBRlbXlMHWwEEUwRVBlVKVFNVBlMBAARIUwAFBBkEVAcNGVtRV1YVUwwEUg0EB1RdAAAHGQdeWV0GVABWGQhXAFEZDVVUBhVWAVQHGVEBDwZVVQUEVgkAUg> > is used as a compact machine- and human-readable representation of geometric > objects and coordinate reference information, as specified two decades ago in > the OGC and ISO standard “Geographic information – Simple feature access – > Part 1: Common architecture > <http://mail.opengeospatial.org/lists/lt.php?tid=fR5SVV1aU1cDAR0AAg1QSFAFVVMZUgNQARlYVVpaCgRWVAAHU1JKVFNVBlMBAARIUwAFBBkEVAcNGVtRV1YVUwwEUg0EB1RdAAAHGQdeWV0GVABWGQhXAFEZDVVUBhVWAVQHGVEBDwZVVQUEVgkAUg>.” > This standard included a capability for describing coordinate reference > systems as text. The original CRS WKT was subsequently extended in numerous > incompatible ways, and had thus become non-interoperable. > > In 2015, OGC and ISO adopted a major revision of the CRS WKT specification > that allowed a rigorous description of coordinate reference systems and > coordinate operations in WKT, following the data model described in OGC > Abstract Specification, Topic 2, which is also published as ISO 19111:2007 - > Spatial referencing by coordinates. However, OGC AS Topic 2 and ISO > 19111:2007 have recently been revised. The revision of CRS WKT tracks the > changes made to the CRS data model. > > The new edition of the CRS WKT standard aligns with the coordinate reference > system model described in ISO 19111:2018. Specifically the changes from the > 2015 edition are: > > Extension to describe dynamic geodetic and dynamic vertical coordinate > reference systems - coordinate reference systems in which coordinate values > on the surface of the earth change with time due to tectonic deformation > including a time reference (coordinate epoch) for coordinates referenced to a > dynamic CRS; > Extension to describe geoid-based vertical coordinate reference systems; > Extension for the description of datum ensembles, groups of realizations of > one terrestrial or vertical reference system that for low accuracy purposes > may be merged ignoring coordinate transformation; > A rigorous description of temporal coordinate reference systems; > The removal (deprecation) of image coordinate reference systems; and > The remodelling of scope and extent information. > This latest edition of CRS WKT cancels and replaces the 2015 version > <http://mail.opengeospatial.org/lists/lt.php?tid=fR4FUFUAD1YFBh1dA1tVSFAHUVIZCAYCVBkIV1RUCgMDAQdQAQZKVFNVBlMBAARIUwAFBBkEVAcNGVtRV1YVUwwEUg0EB1RdAAAHGQdeWV0GVABWGQhXAFEZDVVUBhVWAVQHGVEBDwZVVQUEVgkAUg> > (also published as ISO 19162:2015 > <http://mail.opengeospatial.org/lists/lt.php?tid=fR5TVVYEAwcEVx1QU1tSSFAHVgEZUglTUxkJUwZRCFUBAFQGAFVKVFNVBlMBAARIUwAFBBkEVAcNGVtRV1YVUwwEUg0EB1RdAAAHGQdeWV0GVABWGQhXAFEZDVVUBhVWAVQHGVEBDwZVVQUEVgkAUg>), > which has been technically revised. The candidate CRS WKT standard was > prepared by the OGC CRS Standards Working Group > <http://mail.opengeospatial.org/lists/lt.php?tid=fR4JBFcGVVRRBh1SVllZSFAOBQ4ZCQgGUBkNX1JXClMGVwBVUlRKVFNVBlMBAARIUwAFBBkEVAcNGVtRV1YVUwwEUg0EB1RdAAAHGQdeWV0GVABWGQhXAFEZDVVUBhVWAVQHGVEBDwZVVQUEVgkAUg> > and Technical Committee ISO/TC 211 Geographic information/Geomatics > <http://mail.opengeospatial.org/lists/lt.php?tid=fR4EBwRQU1VfVx1QAFoDSFAABwcZUlRdDRlYVAVXAQVUAVYMVlVKVFNVBlMBAARIUwAFBBkEVAcNGVtRV1YVUwwEUg0EB1RdAAAHGQdeWV0GVABWGQhXAFEZDVVUBhVWAVQHGVEBDwZVVQUEVgkAUg>. > > The candidate Well Known Text Representation of Coordinate Reference Systems > standard is available for review and comment on the OGC Portal > <http://mail.opengeospatial.org/lists/lt.php?tid=fR5WVQBXBVBWWh1XAA8ESFBWAFMZCQNQURkMU1cADlVQU1JQXQRKVFNVBlMBAARIUwAFBBkEVAcNGVtRV1YVUwwEUg0EB1RdAAAHGQdeWV0GVABWGQhXAFEZDVVUBhVWAVQHGVEBDwZVVQUEVgkAUg>. > Comments are due by 5th November 2018 and should be submitted via the method > outlined on the CRS WKT Standard’s request page > <http://mail.opengeospatial.org/lists/lt.php?tid=fR4BDVYEAFcAAR1SB10CSFAGB1QZCQFTUxkBUVBUCwMGVgFWUVNKVFNVBlMBAARIUwAFBBkEVAcNGVtRV1YVUwwEUg0EB1RdAAAHGQdeWV0GVABWGQhXAFEZDVVUBhVWAVQHGVEBDwZVVQUEVgkAUg>. > > > About OGC > > The Open Geospatial Consortium (OGC) is an international consortium of more > than 525 companies, government agencies, research organizations, and > universities participating in a consensus process to develop publicly > available geospatial standards. OGC standards support interoperable solutions > that ‘geo-enable’ the Web, wireless and location-based services, and > mainstream IT. OGC standards empower technology developers to make geospatial > information and services accessible and useful within any application that > needs to be geospatially enabled. Visit the OGC website at > www.opengeospatial.org > <http://mail.opengeospatial.org/lists/lt.php?tid=fR4DAwZRAQFXAh1WVgpYSFBWDg8ZUgUAAxkOUgZaWQQMAVVRUFJKVFNVBlMBAARIUwAFBBkEVAcNGVtRV1YVUwwEUg0EB1RdAAAHGQdeWV0GVABWGQhXAFEZDVVUBhVWAVQHGVEBDwZVVQUEVgkAUg>. > > > This press release is also available online at: > www.opengeospatial.org/pressroom/pressreleases/2881 > <http://www.opengeospatial.org/pressroom/pressreleases/2881> > EDITORS: When publishing this on your blog or website, we request that you > link back to the above URL. > The image used in the PR is available without text or logo here > <http://mail.opengeospatial.org/lists/lt.php?tid=fR5SUVcEVwIDBx1SBQoFSFBWVgcZUVMCAxlfVFRbWw4HBwhVUAFKVFNVBlMBAARIUwAFBBkEVAcNGVtRV1YVUwwEUg0EB1RdAAAHGQdeWV0GVABWGQhXAFEZDVVUBhVWAVQHGVEBDwZVVQUEVgkAUg>. > > > > > > > <http://mail.opengeospatial.org/lists/lt.php?tid=fR5TAgNTBF0HBx0AVFkESFBRAwEZUgEHBxkPAwYHXVNRUFVWU1dKVFNVBlMBAARIUwAFBBkEVAcNGVtRV1YVUwwEUg0EB1RdAAAHGQdeWV0GVABWGQhXAFEZDVVUBhVWAVQHGVEBDwZVVQUEVgkAUg> > > <http://mail.opengeospatial.org/lists/lt.php?tid=fR4BAVdbBFZWVx1UAF1TSFBVBFIZCFUFDBlcVVMAXgMMVlYHU1VKVFNVBlMBAARIUwAFBBkEVAcNGVtRV1YVUwwEUg0EB1RdAAAHGQdeWV0GVABWGQhXAFEZDVVUBhVWAVQHGVEBDwZVVQUEVgkAUg> > > <http://mail.opengeospatial.org/lists/lt.php?tid=fR4HAFcGA1wCBx1QAgFVSFBSBFEZUQUGAhkKVQAFWgECWgMGAQRKVFNVBlMBAARIUwAFBBkEVAcNGVtRV1YVUwwEUg0EB1RdAAAHGQdeWV0GVABWGQhXAFEZDVVUBhVWAVQHGVEBDwZVVQUEVgkAUg> >
