What is wrong with as.numeric()?
> as.numeric(c("100","12","213"))
[1] 100 12 213
> sum(as.numeric(c("100","12","213")))
[1] 325
HTH,
Jorge
On Sun, Jan 22, 2012 at 3:34 PM, Sam Steingold <> wrote:
> > * Petr Savicky <> [2012-01-20 21:59:51 +0100]:
> >
> > Try the following.
> >
> > x <-
> > tolower("ThusThisLongWordWithLettersAndDigitsFrom0to9isAnIntegerBase36")
> > x <- strsplit(x, "")[[1]]
> > digits <- 0:35
> > names(digits) <- c(0:9, letters)
> > y <- digits[x]
> >
> > # solution using gmp package
> > library(gmp)
> > b <- as.bigz(36)
> > sum(y * b^(length(y):1 - 1))
> >
> > [1]
> >
> "70455190722800243410669999246294410591724807773749367607882253153084991978813070206061584038994
>
> thanks, here is what I wrote:
>
> ## convert a string to an integer in the given base
> digits <- 0:63
> names(digits) <- c(0:9, letters, toupper(letters), "-_")
> string2int <- function (str, base=10) {
> d <- digits[strsplit(str,"")[[1]]]
> sum(d * base^(length(d):1 - 1))
> }
>
> and it appears to work.
> however, I want to be able to apply it to all elements of a vector.
> I can use apply:
>
> > unlist(lapply(c("100","12","213"),string2int))
> [1] 100 12 213
>
> but not directly:
>
> > string2int(c("100","12","213"))
> [1] 100
>
> thanks a lot for your help!
>
> --
> Sam Steingold (http://sds.podval.org/) on Ubuntu 11.10 (oneiric) X
> 11.0.11004000
> http://honestreporting.com http://thereligionofpeace.com http://camera.org
> http://www.memritv.org http://openvotingconsortium.org
> A man paints with his brains and not with his hands.
>
> ______________________________________________
> [email protected] 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.
>
[[alternative HTML version deleted]]
______________________________________________
[email protected] 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.
