search for: allnum

Hi, I am a newbie of R, and playing with the "ifelse" statement. I have the following codes: ## first, for(i in 1:3) { for(j in 2:4) { cor.temp <- cor(iris.allnum[,i], iris.allnum[,j]) if(i==1 & j==2) corr.iris <- cor.temp else corr.iris <- c(corr.iris, cor.temp) } } this code is working fine. I also tried to perform the same thing in another way with "ifelse": for(i in 1:3) { for(j in 2:4) { cor.temp <- cor(iris.allnum[,i], iris.all...

...ytrax.com/tech/web/regex.htm#search) investigating regular expressions I now have a basic grasp, but I am having difficulties removing ALL of the instances or 1. or 2. The code below removes just a SINGLE instance of the target string, but I was expecting it to remove all instances as I have \\*.[[allnum]]. I did try \\*.[[allnum]]*, but this did not work. form<-sub("\\+*\\s*[[:alnum:]]*\\s*\\*.[[:alnum:]]", "", form) I am obviously still not understanding something. If the list could offer some guidance I would be most grateful. Regards Mike Griffiths -- *Michael Gr...

HI all, Is there a renumbering function in R? I would like to renumber the following id numbers *Input file * Id Father Mother 123 0 0 124 0 0 125 123 124 126 123 0 127 125 126 128 0 127 130 123 125 *Output* Id Father Mother 1 0 0 2 0 0 3 1 2 4 1 0 5 3 4 6 0 7 7 1 2 Any help is highly appreciated in Advance Val K [[alternative HTML version deleted]]