Add Periods to a Date
Add periods to two element start date of given frequency to give a new date. NULL periods is treated as 0.
addDate(date, periods, freq)
date |
A two element date as used by tsp i.e c(year, period). |
periods |
A number of periods. |
freq |
The number of periods in a year. |
A two element date.
A useful utility not strictly part of tframe.
addDate(c(1998,1), 20, 12)
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