Make a union of numeric or
bdNumeric or calendar positions (i.e. positions of
series objects, which can be numeric,
bdNumeric,
bdTimeDate, or time vectors or sequences)
objects using
localzone and
matchtol as in the
seriesMerge and
align
functions.
if T, union by matching with all
passed-in positions (must be calendar-based)
in their local time zones, instead of with
the absolute GMT times.
matchtol
tolerance for matching positions. Positions which match within
matchtol will
not be duplicated in the output.
VALUE:
a new positions object containing all of the input positions, with
duplicates (as defined by
matchtol and
localzone) removed.
Returns
numeric(0) if no
... arguments are given.