Hi, How do I check for two conditions in an if loop? I want to check if a value lies between 2 other values. For example, A <- ts(rnorm(120), freq=12, start=c(1992,8)) X <- 0.5 Y <- 0.8 I would like to create a new vector C for which C[i] is 0 if A[i] lies in between X and Y. Would be grateful for any help. Sorry for asking such an R-newbie question! Shruthi -- View this message in context: http://www.nabble.com/if-statement-tp21289608p21289608.html Sent from the R help mailing list archive at Nabble.com.
Shruthi Jayaram wrote:> Hi, > > How do I check for two conditions in an if loop? I want to check if a value > lies between 2 other values. >"if" isn't normally a loop, but what you want is the vectorized version, the ifelse() function.> For example, > > A <- ts(rnorm(120), freq=12, start=c(1992,8)) > X <- 0.5 > Y <- 0.8 > > I would like to create a new vector C for which C[i] is 0 if A[i] lies in > between X and Y. >C <- ifelse( X < A & A < Y, 0, A) Duncan Murdoch> Would be grateful for any help. Sorry for asking such an R-newbie question! > > Shruthi >
Hello, If you do C <- A C[A > X & A < Y] <- 0 you get what it seems you want. Best regards, Carlos J. Gil Bellosta http://www.datanalytics.com On Mon, 2009-01-05 at 03:41 -0800, Shruthi Jayaram wrote:> A <- ts(rnorm(120), freq=12, start=c(1992,8)) > X <- 0.5 > Y <- 0.8
Hi r-help-bounces at r-project.org napsal dne 05.01.2009 12:41:49:> > Hi, > > How do I check for two conditions in an if loop? I want to check if avalue> lies between 2 other values. > > For example, > > A <- ts(rnorm(120), freq=12, start=c(1992,8)) > X <- 0.5 > Y <- 0.8 > > I would like to create a new vector C for which C[i] is 0 if A[i] liesin> between X and Y.Well, you do not say what you want for C values if A[i] is not in such interval. So C<-(A<X|A>Y)*1 gives you zeros in required positions and ones in other positions. Regards Petr> > Would be grateful for any help. Sorry for asking such an R-newbiequestion!> > Shruthi > -- > View this message in context: http://www.nabble.com/if-statement- > tp21289608p21289608.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guidehttp://www.R-project.org/posting-guide.html> and provide commented, minimal, self-contained, reproducible code.