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OGC documentation question for not clear aspects

OGC Public Forum : Forum Index -> CT: Coordinate Transformation Services

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cavila

Joined: 25 Jun 2009
Posts: 1

Posted: Thu Jun 25, 2009 12:14 pm Post subject: OGC documentation question for not clear aspects

I downloaded the document 01-009 Implementation Specification Coordinate Transformation Service Revision 1.00.

It specifie a class called CS_CoordinateSystemFactory that is clear way for creating new Coordinates System.

In document it declares a class method

Code:

createGeographicCoordinateSystem (name:CharacterString, angularUnit:CS_AngularUnit, horizontalDatum:CS_HorizontalDatum, primeMeridian:CS_PrimeMeridian, axis0:CS_AxisInfo, axis1:CS_AxisInfo) : CS_GeographicCoordinateSystem

.

The problem is that this class method need one instance of

Code:

CS_AngularUnit

but the specification does not provide a method to create such instance.

At class

Code:

CoordinateSystemAuthorityFactory

there is a method called

Code:

createAngularUnit (code:CharacterString) : CS_AngularUnit

.

So my question is:
Has the CoordinateSystemFactory to make a call to
CoordinateSystemAuthorityFactory to get a instance by code?
Or it is a documentation fault?

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