Class VerticalDatumCheck

Namespace: EncDotNet.S100.Navigation

Assembly: EncDotNet.S100.Navigation.dll

Compares the vertical datums of a charted depth and a water level.

public static class VerticalDatumCheck

Inheritance: object

VerticalDatumCheck

Inherited Members: object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Remarks

S-102 depths are referred to the vertical datum in the root group's verticalDatum attribute (S-102 Ed 3.0.0 §5.3 and §10.2.1, Table 10-2). S-104 heights are referred to their own verticalDatum (S-104 Ed 2.0.0 §5.2, Table 5-1), and the specification requires it to be consistent with the underlying S-101 and S-102 datasets, with conflicts resolved with the producer. Adding a height to a depth on a different datum gives a wrong total, so the passage check doesn't apply the water level when the codes differ, and reports the mismatch.

Both products use the same S-100 vertical datum code list, so equal codes are the same datum. Only verticalDatumReference = 1 (S-100 codes) is allowed in S-102, so codes are compared directly.

Methods

Compare(int?, int?)

Compares two datum codes. A code that isn't in the S-100 vertical datum list (such as an EPSG code written into verticalDatum by a pre-release producer) counts as undeclared.

public static DatumAgreement Compare(int? depthDatum, int? waterLevelDatum)

Parameters

depthDatum int?: The charted depth's datum code, or null.
waterLevelDatum int?: The water level's datum code, or null.

Returns