yearqtr() could optionally output 2025Q4 format

[jan-swissre]

data.table::yearqtr("2025-12-31")
#[1] 2025.75
data.table::yearqtr(as.Date("2025-12-31"))
#[1] 2025.75

there could be new argument format = c("numeric", "character") and the latter one would produce

2025Q1
2025Q2
2025Q3
2025Q4

so commonly used format

current workaround is to have wrapper

paste(data.table::year("2025-12-31"), data.table::quarter("2025-12-31"), sep = "Q")

[ben-schwen]

Maybe also for yearmon? Numeric probably as default to stay on par with zoo

[LunaticSage218]

I'll tackle this issue.