HeightAboveDatumType

This contains information about the height above Ordnance Datum Newlyn (ODN; heightAboveDatum attribute) and, where known, the accuracy of this value (accuracyOfHeightAboveDatum attribute). This attribute is only present in the Topographic Line and the Topographic Point Feature Types.

heightAboveDatum

The height of the feature above the ODN vertical datum, in metres. Forms part of the heightAboveDatum complex attribute.

• Attribute Name: heightAboveDatum

• Type: Real

• Multiplicity: [1]

accuracyOfHeightAboveDatum

The accuracy of the vertical position in metres at the 95% confidence level. Forms part of the heightAboveDatum complex attribute.

• Attribute Name: accuracyOfHeightAboveDatum

• Type: String

• Multiplicity: [1]