Re: [R] R function to convert a number to text

From: Dimitris Rizopoulos <dimitris.rizopoulos_at_med.kuleuven.be>
Date: Mon, 03 Mar 2008 13:26:54 +0100

check also the article by John Fox in Rnews volume 5/1, May 2005, Programmer's Niche 51-55:

http://cran.r-project.org/doc/Rnews/Rnews_2005-1.pdf

Best,
Dimitris



Dimitris Rizopoulos
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium

Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://med.kuleuven.be/biostat/
     http://www.student.kuleuven.be/~m0390867/dimitris.htm


> lin tang wrote:
>> hi, Dear R users -
>>
>> I wonder is there a written R function to convert a number to a
>> text, say convert 1 to "one" , 100 to "one hundred". I know in
>> xls. has such a function BAHTTEXT, does anybody know is there a
>> similar function in R ? Thanks.
>>
> Hi Lin,
> I got bored after the millions, but this should handle the smaller
> numbers, and you can always extend it.
>
> digits2text<-function(x,mult="") {
> units<-c("one","two","three","four","five",
> "six","seven","eight","nine")
> teens<-c("ten","eleven","twelve","thirteen","fourteen",
> "fifteen","sixteen","seventeen","eighteen","nineteen")
> tens<-c("ten","twenty","thirty","forty","fifty",
> "sixty","seventy","eighty","ninety")
> digits<-rev(as.numeric(strsplit(as.character(x),"")[[1]]))
> digilen<-length(digits)
> if(digilen == 2 && digits[2] == 1) return(teens[digits[1]+1])
> digitext<-units[digits[1]]
> if(digilen > 1) digitext<-c(digitext,tens[digits[2]])
> if(digilen > 2) digitext<-c(digitext,"hundred",units[digits[3]])
> if(digilen > 3) digitext<-
> c(digitext,digits2text(floor(x/1000),"thousand"))
> if(digilen > 6) digitext<-
> c(digitext,digits2text(floor(x/1000000),"million"))
> return(paste(c(rev(digitext),mult),sep="",collapse=" "))
> }
>
> Jim
>
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