magclass (version 3.74)

isYear: isYear

Description

Function to find out whether a vector consists of strings in the format "yXXXX" or "XXXX" with X being a number

Usage

isYear(x, with_y=TRUE)

Arguments

x

A vector

with_y

indicates which dataformat years have to have (4-digit without y (e.g.1984) or 5digit including y (y1984))

Value

Examples

x<-c("1955","y1853","12a4")
isYear(x, with_y=TRUE)
isYear(x, with_y=FALSE)