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

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--
---------------------------------
Don MacQueen
Lawrence Livermore National Laboratory
Livermore, CA, USA
925-423-1062
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