The description and definition of a vertical axis in a coordinate system. The vertical direction is defined as normal to the vertical datum used by the coordinate system.

ref_quantity_property (M, K, I: ref_quantity_property)

The (quantity) property that is described by the axis. Inherited from coordinate_system_axis.


coordinate_system (K, I, V: BAG[0:1] coordinate_system(coordinate_system_axis))

This describes the coordinate system for which this axis is defined. Each coordinate system axis is defined for use by one and only one coordinate system. Each vertical_depth_system_axis may define a part of one coordinate_system. Inherited from coordinate_system_axis.


ref_vertical_axis_orientation (M: ref_vertical_axis_orientation)

The vertical orientation of the coordinate system axis. This orientation is either "upward" or "downward", with "downward" defined as towards the center of the Earth. The axis for the true vertical location system is always oriented "downward", meaning that increasing values move deeper into the Earth. The axis for the elevation location system is always oriented "upward", meaning that increasing values move away from the center of the Earth.


source (M, I: ref_source)

The provider of this instance of reference information. If this instance is provided by POSC, then this attribute must be "POSC". Each vertical_depth_system_axis must provided by one ref_source. Inherited from reference_behavior.


description (O, I: ndt_comment)

A remark about the coordinate system axis. Inherited from coordinate_system_axis.


status (O, I: ndt_instance_status) (0644)

The status of this instance in the version of Epicentre running in a data store. This is an enumerated datatype for which the following are the possible values: current, provisional, deprecated. Current - use without restriction. Provisional - use with caution, this value is for comment and may not appear in future releases of Epicentre. Deprecated - avoid use if possible, it is planned to remove this value in the next major release of Epicentre. Inherited from reference_behavior.


data_collection (I, V: SET[0:?] data_collection(collection_content))

Indicates the data collections that include this instance of E and P data. Each vertical_depth_system_axis may be a member of one or more data_collection. Inherited from e_and_p_data.


datum_for_ranking (I, V: SET[0:?] object_ranking(base_object))

Indicates that an object is being used as a basis for comparison with another object. Each vertical_depth_system_axis may datum for ranking one or more object_ranking. Inherited from object_of_interest.


graphical_element (I, V: SET[0:?] graphical_element(depicted_object))

Specifies one or more graphical elements which are depicting this data item. Each vertical_depth_system_axis may be depicted by one or more graphical_element. Inherited from e_and_p_data.


measurement_datum (O: vertical_datum(datum_for_axis))

The vertical datum that is used to define the origin of the vertical axis. This is the place of zero height or depth. For an axis used to give depth below sea level, this points to the vertical datum that represents sea level. Each vertical_depth_system_axis may be measured from one vertical_datum.


normal_to_datum (O: vertical_datum(orient_axis))

The vertical datum that the vertical depth system axis is defined as normal to. This allows a precise description of what is meant by vertical. Note: the vertical distance between an ellipsoid and a geoid may be different when measured normal to the ellipsoid than when measured normal to the geoid. Each vertical_depth_system_axis may be defined normal to one vertical_datum.


object_of_ranking (I, V: SET[0:?] object_ranking(ranked_object))

Indicates that an object is being classified in a rank order based on its characteristics. Each vertical_depth_system_axis may object of ranking one or more object_ranking. Inherited from object_of_interest.


ref_axis_orientation (O, I: ref_axis_orientation)

The orientation of the axis with respect to previously defined axes in the coordinate system. Each axis is oriented as "right-handed" or "left-handed". Inherited from coordinate_system_axis.


source_reference (O, I: ref_source_reference)

The reference used by source to provide the standard instance, such as Petroleum Industry Data Dictionary (PIDD), Websters Ninth New Collegiate Dictionary, etc. Each vertical_depth_system_axis may documented by one ref_source_reference. Inherited from reference_behavior.


version (O, I: ref_epicentre_version) (0644)

Describes the version of Epicentre when this status was assigned to this instance of reference behavior Each vertical_depth_system_axis may version one ref_epicentre_version. Inherited from reference_behavior.

Local rules:

Uniqueness Constraint
ref_quantity_property, coordinate_system
Supertype path(s):
e_and_p_data > object_of_interest > technical_object > coordinate_system_axis > vertical_depth_system_axis.
reference_behavior > vertical_depth_system_axis.

Entity consolidated into table CORD_SYS_AXIS.

Referenced in Diagrams:

• CS2: Vertical Coordinate Axes