Table 6.14 — DRM_Axis

Property

Description

Class
  • <DRM Axis>

Superclass

Subclass

Definition

An instance of this DRM class specifies a set of values of an independent variable to be used to organize the dependent values in a <DRM Data Table> instance.

The axis_type field specifies the property being described by the <DRM Axis> instance.

The axis_value_count specifies the number of tick marks along the <DRM Axis> instance.

Class diagram

Figure 6.13 — DRM_Axis

Inherited field elements

Field name

Range

Field data type

None

    

Field elements

Field name

Range

Field data type

axis_type

 

EDCS_Attribute_Code

axis_value_count

 

Short_Integer_Positive

Default field values

Default field values for DRM_Axis

Associated to (one-way) (inherited)
  • None.

Associated to (one-way)
  • None.

Associated by (one-way) (inherited)
  • None.

Associated by (one-way)
  • None.

Associated with (two-way) (inherited)
  • None.

Associated with (two-way)
  • None.

Composed of (two-way) (inherited)
  • None.

Composed of (two-way)
  • None.

Composed of (two-way metadata) (inherited)
  • None.

Composed of (two-way metadata)
  • None.

Component of (two-way) (inherited)
  • None.

Component of (two-way)

Constraints

Clarifications

None.

Example(s)

  • A table containing data imported from DTED contains terrain elevation data sampled in a grid of regularly spaced longitude and latitude points. The <DRM Axis> components of such a <DRM Data Table> instance - specifically, <DRM Regular Axis> components - are longitude and latitude.

  • A table of ocean temperature and salinity data taken at varying depths by an expendable bathythermograph can be captured in a table. Such a <DRM Data Table> instance has EAC_WATER_DEPTH as a <DRM Irregular Axis> component, EAC_WATERBODY_TEMPERATURE and EAC_WATERBODY_SALINITY are <DRM Table Property Description> components. If these data were taken at intervals along a path, the locations on that path (say longitudes) forms a second <DRM Axis> component - specifically, a <DRM Interval Axis> component - of the now two-dimensional table.