CODEWITHSUNDEEP
sqlrstring
socialscientist
socialscientist

Reputation: 4232

R: Specify sprintf string padding character

I am trying to create 10-character strings by padding any number with less than 10-characters with zeroes. I've been able to do this with a number of characters less than 10 but the below is causing a 10-character string to form with spaces at the start. How does one make the leading characters 0s?

# Current code
foo <- c("0","999G","0123456789","123456789", "S")
bar <- sprintf("%10s",foo)
bar

# Desired:
c("0000000000","000000999G","0123456789", "0123456789", "00000000S)

Upvotes: 5

Views: 925

Answers (1)

akrun
akrun

Reputation: 887048

We need

sprintf("%010d", as.numeric(foo))
#[1] "0000000000" "0000000999" "0123456789" "0123456789"

If we have character elements, then

library(stringr)
str_pad(foo, width = 10, pad = "0")
#[1] "0000000000" "000000999G" "0123456789" "0123456789" "000000000S"

Upvotes: 3

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