From: Henrik Bengtsson <hb_at_stat.berkeley.edu>

Date: Mon, 28 Jul 2008 10:52:31 -0700

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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. Received on Mon 28 Jul 2008 - 17:58:15 GMT

Date: Mon, 28 Jul 2008 10:52:31 -0700

Use '&' for vectors and '&&' for scalars. Ditto applies to the OR operator(s). /Henrik

On Mon, Jul 28, 2008 at 10:36 AM, Wade Wall <wade.wall_at_gmail.com> 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]]
**>
**> ______________________________________________
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**> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
**> and provide commented, minimal, self-contained, reproducible code.
**>
*

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