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{NumComma} can convert between comma-separated and non-comma-separated numbers every three digits on R.

It also has the *_str function for handling comma-separated and non-comma-separated numbers in a string.

You can install it in

remotes::install_github("indenkun/NumComma")

library(NumComma)

{NumComma} has two functions: NumComma_rm for converting comma-separated numbers into uncomma-separated numbers every three digits, and NumComma_add for converting numbers into comma-separated numbers (strings) every three digits. And there are extensions to these functions, NumComma_rm_str and NumComma_add_str, which perform the conversion for each digit in a string.

NumComma_rm can convert comma-separated numbers (strings) into numbers without commas every three digits.

NumComma_rm("2,020")
#> [1] "2020"

If the number does not contain a comma, it returns the same number.

NumComma_rm("2020")
#> [1] "2020"

Numbers containing numbers after the decimal point can also be converted.

NumComma_rm("1,234.56")
#> [1] "1234.56"

Numbers containing numbers after the decimal point can also be converted.

x <- c("2,020", "2020", "1,234.56")
NumComma_rm(x)
#> [1] "2020"    "2020"    "1234.56"

It is also possible to return the value as a number instead of a string by using convert with TRUE.

x <- c("2,020", "2020", "1,234.56")
NumComma_rm(x, convert = TRUE)
#> [1] 2020.00 2020.00 1234.56

If you enter a number with a comma or a non-comma value for every three digits, it returns the value as it was entered with a warning message.

NumComma_rm("1,23,456")
#> Warning in .f(.x[[1L]], .y[[1L]], ...): this format cannot be converted.
#> [1] "1,23,456"
NumComma_rm("NumComma_rm")
#> Warning in .f(.x[[1L]], .y[[1L]], ...): Strings containing characters other than
#> numbers and commas cannot be converted.
#> [1] "NumComma_rm"

The warning text can be disabled by specifying FALSE in Warnig.message.

NumComma_rm(c("1,23,456", "NumComma_rm"), warnig.message = FALSE)
#> [1] "1,23,456"    "NumComma_rm"

NumComma_rm_str is a function for converting a comma-separated number to an uncomma-separated number for every three digits in a string.

NumComma_rm_str("The total population of Japan is 124,271,318 as of January 1, 2020.")
#> [1] "The total population of Japan is 124271318 as of January 1, 2020."

NumComma_add` is a function for converting numbers into comma-separated numbers (strings) of three digits.

It can accept a number or a string that represents a number.

NumComma_add(123456)
#> [1] "123,456"
NumComma_add("123456")
#> [1] "123,456"

If you enter consecutive numbers starting from 0 as a string it will return the value as is.

NumComma_add("0001")
#> [1] "0001"

If you enter a string that is not a number string (including numbers containing commas), it returns the value you entered with a warning message.

NumComma_add(c("NumComma_add", "1,234"))
#> Warning in .f(.x[[i]], ...): Strings containing characters other than numbers
#> cannot be converted.

#> Warning in .f(.x[[i]], ...): Strings containing characters other than numbers
#> cannot be converted.
#> [1] "NumComma_add" "1,234"

The warning text can be disabled by specifying FALSE in Warnig.message.

NumComma_add(c("NumComma_add", "1,234"), warnig.message = FALSE)
#> [1] "NumComma_add" "1,234"

You can also use digit to convert only numbers with more than the number of digits (including decimal places) specified by digit into comma-separated numbers with every three digits, or small.num to convert only numbers with more than the number of digits specified by small.num into comma-separated numbers with every three digits.

NumComma_add(c(123456, 2020), digit = 4)
#> [1] "123,456" "2020"
NumComma_add(c(123456, 2020), small.num = 3000)
#> [1] "123,456" "2020"

NumComma_add_str is a function for converting numbers in a string to comma-separated numbers.

NumComma_add_str("The total population of Japan is 124271318 people as of January 1, 2020.")
#> [1] "The total population of Japan is 124,271,318 people as of January 1, 2,020."

The NumComma_add_str, like the NumComma_add, can control the number to be converted by arguments.

NumComma_add_str("The total population of Japan is 124271318 people as of January 1, 2020.", digit = 4)
#> [1] "The total population of Japan is 124,271,318 people as of January 1, 2020."
NumComma_add_str("The total population of Japan is 124271318 people as of January 1, 2020.", small.num = 3000)
#> [1] "The total population of Japan is 124,271,318 people as of January 1, 2020."

MIT.

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