parse_id, this will figure out where in the
belongs. Then, it will use the next (previous) month in
month_cycle to construct the id of the
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character string primary_id of a future_series instrument
months in which contracts expire. numeric or month codes. See Details.
root_id. usually only used if there is no underscore in the
how you would like the returned id to be formatted. If NULL, it will match the format of
month_cycle can be a numeric vector (corresponding to the months in which contracts expire),
or it can be a vector of month codes, a vector of month abbreviations, or a comma-delimited
string of month codes or abbreviations, in which case an attempt will be made to convert it to a numeric vector.
by passing it through
root is primarily used when you have an id that does not have an underscore, in which case, providing
will make splitting the id into primary_id and suffix_id easier and more accurate.
root can also be used if you want
the returned id to be on a different
future than the id you passed in (when used this way,
format should also be used).
By default, (when called with
format=NULL) the returned id will be of the same format as the
id that was passed in.
The format of the returned id can be specified with the
format argument. See
format_id for supported values of
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