positions-class
Virtual Classes for Time-Related Objects
Description
The positions, positionsNumeric, and positionsCalendar classes 
are virtual classes that represent positions for series objects. 
The timeInterval class represents time intervals. 
Details
-  The positionsNumeric class is a class union of
numericSequence and numeric, allowing representations of
numeric positions either by a sequence object or simply a vector.
-  The positionsCalendar is a VIRTUAL class and is
extended by timeDate and timeSequence.
-  The positions class is a class union of positionsNumeric
and positionsCalendar.  
-  The timeInterval class is extended
by timeSpan and timeRelative. 
 
See Also