search for: yb1

...example I write a function, so far i have to write the all code inside on the same line wich may become obscure as the function is more and more complex. I would like to do like in the example of the manuels: >twosam <- function(y1, y2) { n1 <- length(y1); n2 <- length(y2) yb1 <- mean(y1); yb2 <- mean(y2) s1 <- var(y1); s2 <- var(y2) s <- ((n1-1)*s1 + (n2-1)*s2)/(n1+n2-2) tst <- (yb1 - yb2)/sqrt(s2*(1/n1 + 1/n2)) tst } all I can do is something like that: >twosam <- function(y1, y2) { n1 <- length(y1); n2 <- len...

...I hit the return key after the penultimate line. I've re-checked and re-typed the code many times to no avail. I wasn't able to find this issue using search options, either. Any help is GREATLY appreciated! > twosam<-function(y1, y2) { + n1<-length(y1);n2 <-length(y2) + yb1<-mean(y1); yb2<-mean(y2) + s1<-var(y1);s2<-var(y2) + s<-((n1-1)*s1 + (n2-1)*s2)/(n1+n2-2) + tst<-(yb1-yb2)/sqrt(s*(1/n1+1/n2)) Error: syntax error David [[alternative text/enriched version deleted]]

Hello, I have a data as follow: ID    Visit xa1 xa2 yb1 yc23 yb33   I want to look at frequency of visit for ID and create a new column as response .  For example my response would be 2 for x and 3 for y. I think I need to write a loop, but I don't know how. I really appreciate your help. Thanks a lot. Best,Farnoosh Sheikhi [[alternative HTML versi...

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