How to express a decimal time in HH:MM

Question

I have a time in decimal format: 22,13 in hours and I would like to express this in R as HH:MM. I mean, 22:08 (depreciating seconds)

Anyone can help me?

Answer 1

The syntax %02.0f is to round the value to an integer and make it always be 2 units. Therefore, 7.8 minutes will be converted to character "08".

x <- c("22,13", "9,25", "7,8")

sprintf("%02d:%02.0f",
        as.numeric(sub(",\\d+", "", x)),
        as.numeric(sub("\\d+,", "0.", x)) * 60)

# [1] "22:08" "09:15" "07:48"