R help - Nov 2008 - how to select cases based on value of one or more variables

dear list,

I have read a spss file with read.spss()

now I have a list with all my variable stored as vectors.

is it possible to selec cases based on the value of one or more  
variables?

thank you,
Simone

?subset

On Nov 30, 2008, at 3:36 PM, Simone Gabbriellini wrote:
> dear list,
>
> I have read a spss file with read.spss()
>
> now I have a list with all my variable stored as vectors.
>
> is it possible to selec cases based on the value of one or more  
> variables?
>
> thank you,
> Simone
>
> ______________________________________________
> R-help at 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.

It is.

For example, if you have a variable stored as a vector named "x", and 
another variable stored as aa vector named "y", you can select cases 
of y where x is greater than 3 by using

   y[x>3]

However, you're going to have to provide more information in order to 
get a better answer than that (see the posting guide, link included 
with every post to r-help). In particular, I'm guessing that the 
answer you really want looks somewhat different than my example -- 
but this depends on the exact structure of what read.spss() produces.

I'd also suggest reading some of the documentation available from the 
R website (CRAN), notably, "An Introduction to R".

-Don

At 9:36 PM +0100 11/30/08, Simone Gabbriellini wrote:
>dear list,
>
>I have read a spss file with read.spss()
>
>now I have a list with all my variable stored as vectors.
>
>is it possible to selec cases based on the value of one or more variables?
>
>thank you,
>Simone
>
>______________________________________________
>R-help at 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.

-- 
---------------------------------
Don MacQueen
Lawrence Livermore National Laboratory
Livermore, CA, USA
925-423-1062
macq at llnl.gov