R command to compare two vectors?

Dear Jason,
Yes, here is one way:

a_tmp<-c("a", "b", "c", "d", "e", "f", "g", 'h')
b_tmp<-c("a", "c", "e", "g")
b_tmp %in% a_tmp

[1] TRUE TRUE TRUE TRUE

b_tmp[b_tmp%in%a_tmp]

[1] "a" "c" "e" "g"

all(b_tmp %in% a_tmp)

[1] TRUE

Take a look at ?"%in%" and ?all for more information.

HTH,

Jorge


On Wed, Feb 4, 2009 at 6:49 PM, Jason Rupert <jasonkrupert at yahoo.com> wrote:

By any chance is there an R command to compare two vectors?

For example,
a_tmp<-c("a", "b", "c", "d", "e", "f", "g", 'h')
b_tmp<-c("a", "c", "e", "g")

I would like to compare b_tmp against a_tmp to determine if the members of
b_tmp are part of a_tmp.

I tried
 subset(b_tmp, b_tmp==a_tmp)

That doesn't seem to work.

Thanks again.



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