The description of the spatial geometry of a point (vertex), such as an absolute location or relative position, as required for locating activities or spatial objects in terms of sets of coordinates (e.g., latitude and longitude, x, y, z, etc.) within a coordinate system. The definition and order of ordinate values are provided by the coordinate system in which they are defined. The value of the coordinates may be optionally defined as an offset from an arbitrary vertex, or from the origin of the coordinate system if the offset vertex is not defined.

description (O: ndt_comment)

A remark, comment or description about the location value.


preferred_flag (O, I: ndt_boolean) (1047)

The flag is set to True if this instance of property is the preferred value in this data store of this type of property for the object which this property describes. Inherited from property.


activity (O, I: activity(process_data))

Defines the activity which created this instance. Each pty_location may be the result of one activity. Inherited from process_data.


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

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


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

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


other_spatial_object (O, I: other_spatial_object(property))

Each pty_location may be a property of one other_spatial_object. Inherited from property.


process_data_item (I, V: SET[0:?] process_data_item(process_data))

Defines where this data was used by an activity. Each pty_location may be the value for one or more process_data_item. Inherited from process_data.


pty_location_accuracy (V: SET[0:?] pty_location_accuracy(pty_location))

Each pty_location may have a property of one or more pty_location_accuracy.

Local rules:

Abstract supertype:
Each PTY_LOCATION must be instantiated as one of its subtypes. These subtypes are: pty_legal_survey_location, pty_location_1d, pty_location_2d, pty_location_3d
[I: property] Mandatory Relationship Set
Each PROPERTY must "be a property of" one object.
Supertype path(s):
process_data > property > pty_location.
e_and_p_data > property > pty_location.

Entity replicated into subtype tables (@pty_location).

Referenced in Diagrams:

• SM2: Spatial Model Properties
• SM3: Spatial Model Location