Compare each element of a list to a vector

try this:

x<-c(1,2,3)
datalist<-list(c(1,2,3),c(2,3,4),c(3,4,5),c(4,5,6))

result <- sapply(datalist, function(.vec){

+     all(.vec == x)
+ })

result

[1]  TRUE FALSE FALSE FALSE

On Sun, Feb 3, 2013 at 1:15 PM,  <mtb954 at gmail.com> wrote:

Hello R-helpers,

I have a vector

x<-c(1,2,3)

and a list that contains vectors

datalist<-list(c(1,2,3),c(2,3,4),c(3,4,5),c(4,5,6))

and I would like to identify those list elements that are identical to x.

I tried

datalist %in% x

[1] FALSE FALSE FALSE FALSE

but I am obviously using %in% incorrectly. I also tried messing around with
lapply but I can't figure out how to specify the function within lapply.

I would appreciate any suggestions you may have.

Many thanks!

Mark Na

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