| Type (1) |
Description (2) |
Data elements (3) |
|---|---|---|
| Point | A pair of coordinates (latitude and longitude) referenced to the mathematical reference ellipsoid which define the position of the point on the surface of the Earth. | Latitude |
| Longitude | ||
| Horizontal reference system | ||
| Units of measurement | ||
| Horizontal accuracy achieved | ||
| Line | Sequence of Points defining a linear object | Sequence of Points |
| Polygon | Sequence of Points forming the boundary of the polygon. The first and last Point are identical. | Closed sequence of Points |
| Height | The vertical distance of a level, point or an object considered as a point, measured from a specific datum. | Numerical value |
| Vertical reference system | ||
| Units of measurement | ||
| Vertical accuracy achieved | ||
| Altitude | The vertical distance of a level, a point or an object considered as a point, measured from mean sea level. | Numerical value |
| Vertical reference system | ||
| Units of measurement | ||
| Vertical accuracy achieved | ||
| Elevation | The vertical distance of a point or a level, on or affixed to the surface of the earth, measured from mean sea level. | Numerical value |
| Vertical reference system | ||
| Units of measurement | ||
| Vertical accuracy | ||
| Distance | A linear value | Numerical value |
| Units of measurement | ||
| Accuracy achieved | ||
| Angle / Bearing | An angular value | Numerical value |
| Units of measurement | ||
| Accuracy achieved | ||
| Value | Any measured, declared or derived value not listed above. | Numerical Value |
| Units of Measurement | ||
| Accuracy achieved | ||
| Date | A calendar date referencing a particular day or month | Text |
| Schedule | A repetitive time period, composed of one or more intervals or special dates (e.g. holidays) occurring cyclically | Text |
| Code list | A set of predefined Text strings or values | Text |
| Text | Free text | String of characters without constraints |