Function to convert dates formatted as year-quarter to date-format objects
quarter2Date(x, base.month = "Mar", format = "%Y-Q%q")
Year-quarter date format
Specifies base month for first quarter. Can be a scalar: 1,2,3 or character object: Jan, Feb, Mar.
The input date format. Default is "%Y-Q%q".
This function returns a Date format object.