It may be necessary to revise these changes within the next few months. This will result in feedback to the developing Measures classes. It should be easy to construct a Measure from a field of a MeasurementSet.
Measure is the abstract base class for a set of classes dealing with coordinates.
These derived classes include MDirection, MPosition, MEpoch, MFrequency, etc. The value of this keyword will be a string indicating one of the basic Measure types. It is not yet clear how to references will be stored, the following is a suggestion that will be possible once Records can be stored in keywords and table columns. The exact details of what information will go in such a Record is not yet clear and will certainly depend on the specific type of Measure. As far as the user is concerned, the following member functions are proposed to aid in the construction of a Measure.