Identify a Time Variable

Find the element of nms that looks like an time variable. If no elements look like a time variable, or if two or more elements do, then return NULL.

Usage

find_var_time(nms)

Arguments

nms

A character vector

Value

An element of nms, or NULL.

See also

find_var_age(), find_var_sexgender()

Examples

find_var_time(c("Sex", "Year", "AgeGroup", NA)) ## one valid
#> [1] "Year"
find_var_time(c("Sex", "Region"))               ## none valid
#> NULL
find_var_time(c("time", "year"))                ## two valid
#> NULL