Hi, May be this might help you. set.seed(1) a <-rlnorm(500,0.7,1) a1<-a[a>30|a<0.5] set.seed(2) a2 <-rlnorm(500,0.7,1) a3<-a2[a2>30|a2<0.5] a4<-a2[!a2%in%a3] summary(a4) # Min. 1st Qu. Median Mean 3rd Qu. Max. # 0.5105 1.2500 2.2990 3.6850 4.7140 25.3600
a[a%in%a1]<-sample(a4,length(a[a%in%a1]),replace=FALSE) summary(a) # Min. 1st Qu. Median Mean 3rd Qu. Max. # 0.5044 1.2900 2.1310 3.5320 4.1510 28.4800 a[a>30|a<0.5] #numeric(0) A.K. ----- Original Message ----- From: Andras Farkas <motyoc...@yahoo.com> To: "r-help@r-project.org" <r-help@r-project.org> Cc: Sent: Saturday, September 1, 2012 5:29 AM Subject: [R] help on setting boundaries for generating random numbers Dear All, is there a way to set low and high limits to a simulation with rlnorm()? as an example: a <-rlnorm(500,0.7,1) I get the summary of Min. 1st Qu. Median Mean 3rd Qu. Max. 0.1175 1.0590 2.1270 3.4870 4.0260 45.3800 I would like to set limits so that the simulated values minimum would be greater then 0.5 and maximum of less than 30. If during simulation a value outside of the limits would be simulated, then I would like R to "throw that value out" and go back to generate another random number instead that would fit the limits criteria. Apreciate all the help on this, Sincerely, Andras [[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. ______________________________________________ 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.
