BS ISO 19162:2019 – TC:2020 Edition
$280.87
Tracked Changes. Geographic information. Well-known text representation of coordinate reference systems
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 279 |
This document defines the structure and content of a text string implementation of the abstract model for coordinate reference systems described in ISO 19111. The string defines frequently needed types of coordinate reference systems and coordinate operations in a self-contained form that is easily readable by machines and by humans. The essence is its simplicity; as a consequence there are some constraints upon the more open content allowed in ISO 19111. To retain simplicity in the well-known text (WKT) description of coordinate reference systems and coordinate operations, the scope of this document excludes parameter grouping and pass-through coordinate operations. The text string provides a means for humans and machines to correctly and unambiguously interpret and utilise a coordinate reference system definition with look-ups or cross references only to define coordinate operation mathematics. A WKT string is not suitable for the storage of definitions of coordinate reference systems or coordinate operations because it omits metadata about the source of the data and may omit metadata about the applicability of the information.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 157 | undefined |
| 163 | Foreword |
| 164 | Introduction |
| 165 | 1 Scope 2 Normative references 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions |
| 174 | 3.2 Abbreviated terms 4 Conformance requirements |
| 175 | 5 Backus-Naur Form notation and syntax |
| 176 | 6 WKT string form 6.1 Overview 6.2 Encoding 6.3 Characters used in WKT 6.3.1 Basic characters |
| 177 | 6.3.2 Numbers |
| 178 | 6.3.3 Date and time |
| 179 | 6.3.4 CRS WKT characters 6.3.5 Double quote 6.4 Delimiter |
| 180 | 6.5 Case sensitivity 6.6 Reserved keywords |
| 182 | 6.7 Backward compatibility 7 WKT representation of common attributes 7.1 General 7.2 Name |
| 183 | 7.3 Scope, extent, identifier and remark 7.3.1 General 7.3.2 Usage (scope and extent) |
| 186 | 7.3.3 Identifier |
| 187 | 7.3.4 Remark |
| 188 | 7.4 Unit and unit conversion factor 7.4.1 Unit description |
| 189 | 7.4.2 Conversion factor — Spatial and parametric units 7.4.3 Conversion factor — Temporal quantities |
| 190 | 7.4.4 Default unit 7.5 Coordinate system 7.5.1 Syntax |
| 193 | 7.5.2 Coordinate system type, dimension and coordinate data type 7.5.3 Axis name and abbreviation |
| 194 | 7.5.4 Axis direction |
| 195 | 7.5.5 Axis order |
| 196 | 7.5.6 Axis unit and coordinate system unit |
| 197 | 7.5.7 Examples of WKT describing coordinate systems |
| 198 | 7.6 Datum ensemble |
| 200 | 7.7 Dynamic coordinate reference systems |
| 201 | 8 WKT representation of geodetic and geographic coordinate reference systems 8.1 Overview |
| 202 | 8.2 Geodetic reference frame (geodetic datum) 8.2.1 Ellipsoid |
| 203 | 8.2.2 Prime meridian |
| 204 | 8.2.3 Geodetic reference frame (datum) |
| 205 | 8.3 Coordinate systems for geodetic and geographic CRSs |
| 206 | 8.4 Examples of WKT describing a geodetic or geographic CRS |
| 207 | 9 WKT representation of projected CRSs 9.1 Overview 9.2 Base CRS 9.2.1 General |
| 208 | 9.2.2 Ellipsoidal CS unit |
| 209 | 9.3 Map projection 9.3.1 Introduction |
| 210 | 9.3.2 Map projection name and identifier 9.3.3 Map projection method |
| 211 | 9.3.4 Map projection parameter 9.4 Coordinate systems for projected CRSs 9.5 Examples of WKT describing a projected CRS |
| 213 | 10 WKT representation of vertical CRSs 10.1 Overview |
| 214 | 10.2 Vertical reference frame (vertical datum) 10.3 Vertical coordinate system |
| 215 | 10.4 Example of WKT describing a vertical CRS 11 WKT representation of engineering CRSs 11.1 Overview 11.2 Engineering datum |
| 216 | 11.3 Coordinate systems for engineering CRSs 11.4 Examples of WKT describing an engineering CRS |
| 217 | 12 WKT representation of parametric CRSs 12.1 Overview 12.2 Parametric datum 12.3 Parametric coordinate system 12.4 Example of WKT describing a parametric CRS |
| 218 | 13 WKT representation of temporal CRSs 13.1 Temporal CRS 13.2 Temporal datum |
| 219 | 13.3 Temporal coordinate system 13.3.1 General 13.3.2 Axis unit for temporalDateTime coordinate systems 13.3.3 Axis unit for temporalCount and temporalMeasure coordinate systems 13.4 Examples of WKT describing a temporal CRS |
| 220 | 14 WKT representation of derived CRSs 14.1 Overview |
| 221 | 14.2 Deriving conversion 14.2.1 General 14.2.2 Derived CRS conversion method |
| 222 | 14.2.3 Derived CRS conversion parameter 14.2.4 Derived CRS conversion parameter file |
| 223 | 14.2.5 Derived CRS conversion example 14.3 Derived geodetic CRS and derived geographic CRS 14.3.1 Representation |
| 225 | 14.3.2 Example of WKT describing a derived geographic CRS 14.4 Derived projected CRS 14.4.1 Representation |
| 226 | 14.4.2 Example of WKT describing a derived projected CRS |
| 227 | 14.5 Derived vertical CRS 14.6 Derived engineering CRS |
| 228 | 14.7 Derived parametric CRS 14.8 Derived temporal CRS |
| 229 | 15 WKT representation of compound coordinate reference systems 15.1 Overview 15.2 Examples of WKT describing a compound CRS |
| 230 | 16 WKT representation of coordinate epoch and coordinate metadata 16.1 Coordinate epoch |
| 231 | 16.2 Coordinate metadata |
| 232 | 17 WKT representation of coordinate transformations and coordinate conversions excluding map projections 17.1 Coordinate operations 17.2 Transformation and conversion components 17.2.1 Operation name and version 17.2.2 Source and target CRS |
| 233 | 17.2.3 Transformation and conversion name and identifier 17.2.4 Coordinate operation method 17.2.5 Coordinate operation parameter |
| 234 | 17.2.6 Coordinate operation parameter file 17.2.7 Interpolation CRS 17.2.8 Coordinate operation accuracy |
| 235 | 17.2.9 Other coordinate operation attributes 17.3 Examples of WKT describing a coordinate transformation |
| 236 | 18 WKT representation of point motion operations |
| 237 | 19 WKT representation of concatenated coordinate operations 19.1 General |
| 239 | 19.2 Examples of WKT describing a concatenated coordinate operation |
| 240 | 20 WKT representation of CRS and coordinate operation couplets 20.1 Bound CRS |
| 241 | 20.2 Bound CRS components 20.2.1 Abridged coordinate transformation 20.2.2 Coordinate operation method in abridged coordinate transformations 20.2.3 Abridged coordinate transformation parameter |
| 242 | 20.2.4 Coordinate operation parameter file 20.3 Examples of WKT describing a bound CRS |
| 244 | Annex A (normative) Abstract test suite |
| 253 | Annex B (informative) Recommended practice for implementation |
| 256 | Annex C (informative) Mapping of concepts from previous versions of CRS WKT |
| 267 | Annex D (informative) Backward compatibility with ISO 19162:2015 |
| 271 | Annex E (normative) Triaxial ellipsoid |
| 272 | Annex F (informative) Identifiers for coordinate operation methods and parameters |
| 277 | Bibliography |
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