[R] TRUE/FALSE as numeric values

[Chuck Cleland]

Thomas Preuth wrote:
> Hello,
> 
> I want to select in a column of a dataframe all numbers smaller than a 
> value x
> but when I type in test<-(RSF_EU$AREA<=x) I receiv as answer:
>  > test
>  [1]  TRUE FALSE FALSE  TRUE  TRUE  TRUE FALSE FALSE  TRUE  TRUE  TRUE 
> FALSE  TRUE  TRUE  TRUE  TRUE  TRUE
> [18]  TRUE  TRUE  TRUE  TRUE FALSE FALSE  TRUE  TRUE  TRUE  TRUE  TRUE  
> TRUE  TRUE FALSE  TRUE  TRUE  TRUE
> [35] FALSE  TRUE  TRUE  TRUE  TRUE FALSE FALSE FALSE  TRUE  TRUE FALSE  
> TRUE  TRUE FALSE FALSE  TRUE FALSE
> [52]  TRUE  TRUE  TRUE  TRUE  TRUE FALSE  TRUE  TRUE FALSE  TRUE
> 
> How can i get the values smaller than x and not the TRUE/FALSE reply?

  This is covered in

http://cran.r-project.org/doc/manuals/R-intro.html

(Section 2.7; Index vectors; selecting and modifying subsets of a data set)

RSF_EU$AREA[RSF_EU$AREA <= x]

or to retain other columns in the data frame

subset(RSF_EU, AREA <= x)

> Thanks in advance,
> Thomas
> 
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-- 
Chuck Cleland, Ph.D.
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