ElevatedSurface
ElevatedSurface
A 2-dimensional primitive and is composed of one or more surface patches as specified in ISO 19107:2003, 6.3.17.1, which is extended with properties that represent the vertical position (elevation, datum, accuracy).
| Properties | Definition | Type |
|---|---|---|
| elevation | The vertical distance of the surface level measured from Mean Sea Level (MSL). | (string) ValDistanceVerticalType |
| geoidUndulation | The distance of the geoid above (positive) or below (negative) the mathematical reference ellipsoid at the location of the surface. | (decimal) ValDistanceSignedType |
| verticalAccuracy | The difference between the recorded elevation of a surface and its true elevation referenced to the same vertical datum expressed as a linear error at 95 percent probability. | (decimal) ValDistanceType |
| verticalDatum | The set of reference points or a mathematical model of the Earth's surface (a datum) against which vertical position measurements of a surface, are made as basis for measuring elevations. | (string) CodeVerticalDatumType |
Details
ElevatedSurface
ElevatedSurface
A 2-dimensional primitive and is composed of one or more surface patches as specified in ISO 19107:2003, 6.3.17.1, which is extended with properties that represent the vertical position (elevation, datum, accuracy).
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| ThreeDimensionalSurfaceType | Derived from GM_Surface and extended to include properties that represent the vertical position (elevation, datum, accuracy). |
elevation
ElevatedSurface.elevation
The vertical distance of the surface level measured from Mean Sea Level (MSL).
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| ThreeDimensionalSurfaceType.elevation | The vertical distance of a point or a level, on or affixed to the surface of the earth, measured from mean sea level. |
geoidUndulation
ElevatedSurface.geoidUndulation
The distance of the geoid above (positive) or below (negative) the mathematical reference ellipsoid at the location of the surface.
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| ThreeDimensionalSurfaceType.geoidUndulation | The distance of the geoid above (positive) or below (negative) the mathematical reference ellipsoid at the location of the surface. |
verticalAccuracy
ElevatedSurface.verticalAccuracy
The difference between the recorded elevation of a surface and its true elevation referenced to the same vertical datum expressed as a linear error at 95 percent probability.
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| ThreeDimensionalSurfaceType.verticalAccuracy | The difference between the recorded elevation of an entity and its true elevation referenced to the same vertical datum expressed as a linear error at 95 percent probability. |
verticalDatum
ElevatedSurface.verticalDatum
The set of reference points or a mathematical model of the Earth's surface (a datum) against which vertical position measurements of a surface, are made as basis for measuring elevations.
Semantic Correspondence
| AIRM Concept | Definition |
|---|---|
| ThreeDimensionalSurfaceType.verticalDatum | The set of reference points or a mathematical model of the Earth's surface (a datum) against which vertical position measurements are made as basis for measuring elevations. |