Removing variables

Is there any way to remove at the same time several variables that share 
a suffix, for example (similar to * or ?  in DOS) ?

To remove objects sharing a suffix use something like:

remove(list=objects(pattern="SUFFIX$"))

   To remove variables sharing a suffix from a dataframe use 
something like:

newdata <- mydata[,-grep("SUFFIX$", names(mydata))]

   In both cases the $ metacharacter indicates that the literal 
characters are at the end of the string.

hope this helps,

Chuck Cleland

x1 <- 1

> y1 <- 1
 > objects(pattern="*1")
[1] "x1" "y1"
 > remove(list=objects(pattern="*1"))
 > objects(pattern="*1")
character(0)

Hope this helps.  spencer graves

Hi all,

Is there any way to remove at the same time several variables that share 
a suffix, for example (similar to * or ?  in DOS) ?
Thanks in advance,

      Aurora

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Hi, is there a package for performing leave-one-out
cross validation in R?

help.search("cross validation")  returns   'cv.glm(boot)'
and the boot package provides many other utilities for this.

-  tom blackwell  -  u michigan medical school  -  ann arbor  -

Hi, is there a package for performing leave-one-out
cross validation in R?

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