Dear R experts, is there a simple way to remove the last char of a text string? substr() function use as parameter start end only... but my strings are of different length... 01asap05a -> 01asap05 02ee04b -> 02ee04 Thank you all, Gianandrea -- View this message in context: http://r.789695.n4.nabble.com/remove-last-char-of-a-text-string-tp2254377p2254377.html Sent from the R help mailing list archive at Nabble.com.
Sure. You can use nchar() to find out how long the string is.> teststring <- "01asap05a" > substr(teststring, 1, nchar(teststring)-1)[1] "01asap05" On Mon, Jun 14, 2010 at 9:47 AM, glaporta <glaporta at freeweb.org> wrote:> > Dear R experts, > is there a simple way to remove the last char of a text string? > substr() function use as parameter start end only... but my strings are of > different length... > 01asap05a -> 01asap05 > 02ee04b -> 02ee04 > Thank you all, > Gianandrea-- Sarah Goslee http://www.functionaldiversity.org
On Mon, Jun 14, 2010 at 3:47 PM, glaporta <glaporta at freeweb.org> wrote:> > Dear R experts, > is there a simple way to remove the last char of a text string? > substr() function use as parameter start end only... but my strings are of > different length... > 01asap05a -> 01asap05 > 02ee04b -> 02ee04 > Thank you all, > Gianandrea > -- > View this message in context: http://r.789695.n4.nabble.com/remove-last-char-of-a-text-string-tp2254377p2254377.html > Sent from the R help mailing list archive at Nabble.com. >It's not terribly elegant, but this works: orig.text<-c("01asap05a","02ee04b") substr(orig.text,1,nchar(orig.text)-1) Regards, Gustaf -- Gustaf Rydevik, M.Sci. tel: +46(0)703 051 451 address:Essingetorget 40,112 66 Stockholm, SE skype:gustaf_rydevik
Try:
gsub(".$", "", c('01asap05a', '02ee04b'))
On Mon, Jun 14, 2010 at 10:47 AM, glaporta <glaporta@freeweb.org> wrote:
>
> Dear R experts,
> is there a simple way to remove the last char of a text string?
> substr() function use as parameter start end only... but my strings are of
> different length...
> 01asap05a -> 01asap05
> 02ee04b -> 02ee04
> Thank you all,
> Gianandrea
> --
> View this message in context:
>
http://r.789695.n4.nabble.com/remove-last-char-of-a-text-string-tp2254377p2254377.html
> Sent from the R help mailing list archive at Nabble.com.
>
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--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O
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