On 28-Jul-08 17:52:31, Henrik Bengtsson wrote: > Use '&' for vectors and '&&' for scalars. Ditto applies to the OR > operator(s). /Henrik
What's wrong with using "&" for scalars? Surely it gives the correct answer? Maybe it's simply a bit slower, or something? Ted. > On Mon, Jul 28, 2008 at 10:36 AM, Wade Wall <[EMAIL PROTECTED]> > wrote: >> Hi all, >> >> I am trying to convert geometric means in a matrix to cover classes. >> My >> values are as such: >> >> perc<-c(0,0.025136418, 0.316227766, 1.414213562,3.16227766, >> 7.071067812, >> 15.8113883, 35.35533906, 61.23724357, 84.40971508, 97.46794345) >> cover<-c(0,1,2,3,4,5,6,7,8,9,10) >> >> This is what I am trying to accomplish >> >> veg_mean[veg_mean>0 && veg_mean < .1] <- 1 >> veg_mean[veg_mean>= .1 && veg_mean < 1.0] <- 2 >> veg_mean[veg_mean>=1.0 && veg_mean < 2.0] <- 3 >> veg_mean[veg_mean>=2.0 && veg_mean < 5.0] <- 4 >> veg_mean[veg_mean>= 5.0 && veg_mean < 10.0] <- 5 >> veg_mean[veg_mean>= 10.0 && veg_mean < 25] <- 6 >> veg_mean[veg_mean>= 25.0 && veg_mean < 50.0] <- 7 >> veg_mean[veg_mean>=50.0 && veg_mean < 75.0] <- 8 >> veg_mean[veg_mean>= 75.0 && veg_mean < 95.0 ] <- 9 >> veg_mean[veg_mean>= 95.0 && veg_mean <= 100] <- 10 >> veg_mean[veg_mean> 100] <- NA >> >> where values are assigned based on the geometric means. However, I >> think >> that my syntax for the && operator is wrong and I can't find a >> reference to >> proper syntax. I basically want to "bin" the geometric means. >> >> Any help would be greatly appreciated. >> >> Thanks, >> >> Wade >> >> [[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. -------------------------------------------------------------------- E-Mail: (Ted Harding) <[EMAIL PROTECTED]> Fax-to-email: +44 (0)870 094 0861 Date: 28-Jul-08 Time: 19:21:08 ------------------------------ XFMail ------------------------------ ______________________________________________ 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.
