I have never seen 'break' used in an 'ifelse'; you probably meant to use an 'if' statement there.
On Thu, Mar 1, 2012 at 8:24 AM, Tsai, Pei-Chien <pei-chien.t...@kcl.ac.uk> wrote: > Dear R helpers, > > I have some difficulties in using 'break' function with loop, and the > followings are my script. What I try to do is (1) permute 'or' first; (2) > doing t-test if this 'or' pass criteria 1 (k=1); (3) end the loop when I get > 10 permutations; (4) redo everything again but this time use criteria 2 (k=2) > (I have more criteria 1:n). > > Somehow using my script, the final dataset (results1) only contains the > result from criteria 1 (twice!) but not the result from criteria 2. I guess > probably I put the break function under the wrong loop but I cannot fix it. > Sorry if the whole script looks quite messy, I will be very appreciate if > someone can help me fix this problem or probably give me some advices to > write it in a smart way. > > > My attempt: > > controlall <- rbeta(10000,1.5,6) > caseall <- rbeta(10000,1.6,6) > > results <- NULL > results1 <- NULL > or <-vector("list",length=10) > criteria <- matrix(data=c(1.05,1.15,1.15,1.25),ncol=2,nrow=2) > > for (k in 1:2) { > > for (i in 1:1000) > { > control <- sample(controlall,100) > case <- sample(caseall,100) > or[i] <- > round(mean(case)*(1-mean(control))/(mean(control)*(1-mean(case))),digit=2) > > if (or[i]<criteria[k,2]&or[i]>=criteria[k,1]) > { > group <- c(rep(1,100),rep(0,100)) > value <- c(case,control) > ttest <- (t.test(case,control,alternative="two.sided",paired=F))$p.value > all <- c(or[i],ttest) > results <- rbind(results,all) > } > ifelse(nrow(results)==5,break,1) > } > results1 <- rbind(results1,results) > } > > > Thank you so much in advance, > Amber > > [[alternative HTML version deleted]] > > ______________________________________________ > 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 Data Munger Guru What is the problem that you are trying to solve? Tell me what you want to do, not how you want to do it. ______________________________________________ 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.