Maybe what is seeked is rather between <- function (x,y) x>=range(y)[1] & x<=range(y)[2] A[between(A[,1], x1)& between(A[,2], x2),]
Regards Petr [EMAIL PROTECTED] [EMAIL PROTECTED] napsal dne 30.01.2008 18:14:55: > Let's A = expand.grid(xk1=xk1,xk2=xk2) > > B = A[A[,1] %in% x1 & A[,2] %in% x2, ] > > Should in principle produce the desired result. > > Mama > > > ----- > Mama Attiglah, PhD > Advanced Research Center > Quantitative Research Analyst > State Street Bank > +44(0)20 7698 6290 (Direct Line) > +44 (0)207 004 2968 (Direct Fax) > Please visit our Web site at > www.ssga.com > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > On Behalf Of dxc13 > Sent: 30 January 2008 16:20 > To: r-help@r-project.org > Subject: [R] re stricting points in a data frame > > > useR's, > > Consider some variables and a data frame of points: > x1 <- c(1,2,3) > x2 <- c(3,4,5) > xk1 <- seq(min(x1)-.5, max(x1)+.5,.5) > xk2 <- seq(min(x2)-.5, max(x2)+.5,.5) > expand.grid(xk1=xk1,xk2=xk2) > > xk1 xk2 > 1 0.5 2.5 > 2 1.0 2.5 > 3 1.5 2.5 > 4 2.0 2.5 > 5 2.5 2.5 > 6 3.0 2.5 > 7 3.5 2.5 > ... > 46 2.0 5.5 > 47 2.5 5.5 > 48 3.0 5.5 > 49 3.5 5.5 > > I want to restrict the data frame to only contain points that are within > the > x1 and x2 range. So for this example, only points between 1 and 3 > should be > kept for x1 and values between 3 and 5 should be kept for x2. This > condition needs to be satisfied for both points, not just one of them; > i.e., > if an x1 point satisfies this, but its corresponding x2 point does not, > then > this point should be removed. > Does anyone know a way to do this, in general, for any data frame? > Hope this is not confusing. > Thanks in advance > dxc13 > -- > View this message in context: > http://www.nabble.com/restricting-points-in-a-data-frame-tp15184381p1518 > 4381.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. ______________________________________________ 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.
