3D
Distance in X direction
Distance in Z direction
Offset expressed using cartesian coordinates where X is distance along axis aligned with true north, Y is distace aligned with true east, and Z is distance aligned straight up. Depths are expressed a negative numbers. The origin of the coordinate system is typically defined in the site description.
Distance in Y direction
Cartesian offset
1D
Depth below the earth or water surface. Values are expressed as negative numbers and become more negative in the downward direction.
Depth
Depth
Interval along a horizontal or longitudinal ray. The first coordinate is the angle from north expressed in degrees of the longitudinal array. The second coordinate is the minimum distance along the ray at which the longitudinal interval begins. The third coordinate is the maximium distance along the ray at which the longitudinal interval ends.
Degrees from north
Minimum distance along ray (begin)
Maximum distance along ray (end)
3D
Longitudinal interval
Offset expressed as a distance along a ray that originates from a central point. The angle of the ray is expressed as the first offset coordinate in degrees. The distance along the ray is expressed as the second offset coordinate.
Radial horizontal offset
Distance along ray
Degrees from north
2D
Offset expressed as a distance along a ray that originates from a central point with a third coordinate that indicates the depth below the earth or water surface. The angle of the ray is expressed as the first offset coordinate in degrees. The distance along the ray is expressed as the second offset coordinate. The depth below the earth or water surface is expressed as the third coordinate.
Degrees from north
Depth
Radial horizontal offset with depth
3D
Distance along ray
ODM2 Working Group
ODM2 Spatial Offset Type Controlled Vocabulary
A vocabulary for describing the type of SpatialOffset that exists between two SamplingFeatures.
Height interval above the earth or water surface. The minimum height value is expressed first and then the maximum height value. Values increase in the upward direction.
Height interval
Maximum height (top)
2D
Minimum height (bottom)
Maximum depth (bottom)
Minimum depth (top)
Depth interval
Depth interval below the earth or water surface. The mininum depth value is expressed first and then maximum depth value. Values are expresssed as negative numbers and become more negative in the downward direction.
2D
Distance along ray
Degrees from north
3D
Offset expressed as a distance along a ray that originates from a central point with a third coordinate that indicates the height above the earth or water surface. The angle of the ray is expressed as the first offset coordinate in degrees. The distance along the ray is expressed as the second offset coordinate. The height above the earth or water surface is expressed as the third coordinate.
Height
Radial horizontal offset with height
Distance along ray
3D
Height, directional
Degrees from horizontal
Degrees from north
Height above the earth or water surface along a non-vertical line. The first coordinate is the angle of the ray from north expressed in degrees. The second coordinate is the angle of the ray from horizontal expressed in positive degrees. The distance along the ray is expressed as a positive number that increases with distance along the ray.
Distance along ray
Degrees from north
Depth below the earth or water surface along a non-vertical line. The first coordinate is the angle of the ray from north expressed in degrees. The second coordinate is the angle of the ray from horizontal expressed in negative degrees. The distance along the ray is expressed as a positive number that increases with distance along the ray.
Depth, directional
3D
Degrees from horizontal
Height above the earth or water surface. Values are positive and increase in the upward direction.
1D
Height
Height