Thank you, but this is not what i want exactly.. i would want to launch function "myfun" with this script:
> table <- sample(LETTERS[1:5], 20,TRUE) > > name <- "A" > > myfun <- function(name) { + r <- grep (name[^0-9], table ) + return (r) } but if I do it ,R doesn't accept this.. i want this because i have in "table" (a data frame) ,a list of element that are "hsa-mir-N" (when N is any number)..so, if i put in argument "name" this is: "hsa-mir-70" ,function matches hsa-mir-70, but also (for instance) hsa-mir-700, 710 724 and so on... infact i insert a square brackets ^0-9 to exclude any other number after those i have given (in "name").. It's a little complex situation.. :( p.s: i can't put in "name" simply: hsa-mir-20 to match all hsa-mir-20 in the data frame because i need to match hsa-mir-20 but also (for instance) hsa-mir-20-3... or hsa-mir-20b, hsa-mir-20a..... and not those elements with another number after the 20 jholtman wrote: > > I think this is what you want > >> table <- sample(LETTERS[1:5], 20,TRUE) >> >> name <- "A" >> >> myfun <- function(name) { > + r <- grep (name, table ) > + return (r) } >> >> myfun(name) > [1] 4 7 14 18 >> table > [1] "E" "B" "D" "A" "B" "B" "A" "B" "E" "B" "C" "C" "C" "A" "E" "D" > "D" "A" "D" "C" >> > > > On Fri, Jul 11, 2008 at 1:57 PM, Fran100681 <[EMAIL PROTECTED]> wrote: >> >> Hello everybody! >> >> I'm using R and I have a little problem about function "grep". I 've got >> to >> make a new function in which "grep" is present. So the first argument of >> "grep" is the string we want to find,ok..but in this case I define a >> function "x" before , x receives an argument in a object "name" (for >> instance), then inside function "x" ,i define a grep.. so i want to set >> as >> pattern (1st argument of grep) what i put in "name" and not the string >> "name"... how do i do that? >> >> ex: >> name <- "Tom" >> >> myfun <- function(name) { >> r <- grep ("name", table ) >> return (r) } >> It returns nothing because it searches the word "name" in "table" rather >> "Tom"... >> I hope to receive some little help because this is stopping me in my >> projcet >> :/ ... i m'not able to reach a solution! Thanks a lot! >> -- >> View this message in context: >> http://www.nabble.com/Difficultes-with-grep-tp18409347p18409347.html >> Sent from the R help mailing list archive at Nabble.com. >> >> ______________________________________________ >> R-help@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. >> > > > > -- > Jim Holtman > Cincinnati, OH > +1 513 646 9390 > > What is the problem you are trying to solve? > > ______________________________________________ > R-help@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. > > -- View this message in context: http://www.nabble.com/Difficultes-with-grep-tp18409347p18428404.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@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.