[R] how to store a number into a vector

[David Winsemius]

On Jan 23, 2011, at 6:00 PM, Thomas Stewart wrote:

> Here is a hack, crude solution to get the digits:
>
> Digits <- function(a){
> out <- rep(NA,nchar(a))
> for(i in 1:nchar(a)) out[i] <- substr(a,i,i)
> return(as.numeric(out))
> }
>
> Digits(183429)

str1 <- c(12345, 34567, 45678)
sapply(strsplit(as.character(str1), "") , unlist)

     [,1] [,2] [,3]
[1,] "1"  "3"  "4"
[2,] "2"  "4"  "5"
[3,] "3"  "5"  "6"
[4,] "4"  "6"  "7"
[5,] "5"  "7"  "8"

-- David

>
>
> If all you want is the last three numbers, consider another hack  
> solution:
>
> Last3Digits <- function(a)   as.numeric(substr(a,nchar(a)-2,nchar(a)))
>
> Last3Digits(23495329)
>
> Hope that helps.  These are hack solutions, and I'm willing to bet  
> there is
> better stuff available.
>
> -tgs
>
>
> On Sun, Jan 23, 2011 at 1:39 PM, Quan Zhou <quan.poko2000 at gmail.com>  
> wrote:
>
>> Hi Everyone,
>> A quick question how to store a number like 12345 to a vector or  
>> array with
>> size(1,5), like 1, 2, 3, 4, 5
>> So I can compare if the last three digits of this number is the  
>> same with
>> some other numbers.
>>
>> Thanks a lot
>>
>>      [[alternative HTML version deleted]]
>>
>> ______________________________________________
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>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

David Winsemius, MD
Heritage Laboratories
West Hartford, CT