The description of accuracy of a coordinate set that provides a location.

pty_location (O, K: pty_location(pty_location_accuracy))

Each pty_location_accuracy may be a property of one pty_location.


other_spatial_object (O, K, I: other_spatial_object(property))

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


activity (O, K, I: activity(process_data))

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


error_length (O: ndt_length)

A measure of length that may be used to quantify the accuracy of a location coordinate set. This length describes the maximum error that may reasonably be expected for the location.


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.


uncertainty_ellipsoid (O: ndt_point_geometry_uncertainty)

The set of parameters to describe an ellipsoid, ellipsoid origin offset and ellipsoid orientation at the point being qualified.


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_accuracy 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_accuracy may be depicted by one or more graphical_element. Inherited from e_and_p_data.


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

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

Local rules:

Uniqueness Constraint
pty_location, other_spatial_object, activity
[I: property] Mandatory Relationship Set
Each PROPERTY must "be a property of" one object.
Mandatory Relationship Set (1259)
Each PTY LOCATION ACCURACY must instantiate either error_length or uncertainty_ellipsoid but not both.
Supertype path(s):
process_data > property > pty_location_accuracy.
e_and_p_data > property > pty_location_accuracy.

Entity projects as table P_LOCATION_ACCY.

Referenced in Diagrams:

• SM3: Spatial Model Location