Parse Dates With Year and Quarter Components

Source: R/parser.R

These are generic parsers for year/quarter/month formats that work with nearly all possible year/quarter formats. The only prerequisite is that x contains a 4-digit-year and a 1-digit-quarter or 2-digit-month and no additional numbers.

yq(x, quiet = FALSE)

qy(x, quiet = FALSE)

ym(x, quiet = FALSE)

my(x, quiet = FALSE)

Arguments

x

a character vector
quiet

a logical scalar. If TRUE warnings on parsing failures are suppressed.

Value

a date_yq or date_ym vector

Examples

yq("2018 1")
#> [1] "2018-Q1"
qy("1st Quarter 2019")
#> [1] "2019-Q1"

#' # Works even for filenames, as long as they contain no additional numbers
yq("business_report-2018_1.pdf")
#> [1] "2018-Q1"
my("business_report-082018.pdf")
#> [1] "2018-M08"