ISO yearweek to ISO quarter (numeric)

Maps an ISO yearweek to its ISO-week-based quarter (1 to 4), returned as a number.

Usage

isoyearweek_to_isoquarter_n(x)

# Default S3 method
isoyearweek_to_isoquarter_n(x)

# S3 method for class 'character'
isoyearweek_to_isoquarter_n(x)

Arguments

x

ISO yearweek as a character string of the form "yyyy-ww", e.g. "2020-19" for the 19th ISO week of 2020.

Value

ISO quarter as a numeric vector (1 to 4).

Details

The quarter comes from the ISO week part of the input:

• Weeks 1 to 13 are quarter 1.

• Weeks 14 to 26 are quarter 2.

• Weeks 27 to 39 are quarter 3.

• Weeks 40 and later are quarter 4. This includes week 53.

See also

vignette("date_conversion", package = "cstime") for worked date, ISO year and ISO week conversions. No vignette runs this function.

Other ISO yearweek-to-number converters: isoyearweek_to_isoweek_n(), isoyearweek_to_isoyear_n(), isoyearweek_to_seasonweek_n()

Examples

isoyearweek_to_isoquarter_n("2020-19")
#> [1] 2