Francois -
I think you're looking for the any function:
x = c(1,2,3)
y = c(4,5,6)
any(x==y)
[1] FALSE
any(which(x==y))
[1] FALSE
x = c(1,2,3)
y = c(4,2,5)
any(x==y)
[1] TRUE
any(which(x==y))
[1] TRUE
- Phil Spector
Statistical Computing Facility
Department of Statistics
UC Berkeley
spec...@stat.berkeley.edu
On Tue, 15 Feb 2011, Francois Rousseu wrote:
Hello R users
When using the function which to get matches, I usually do
w<-which(x==y)
length(w)==0
to determine if there are matches or not. Is there a base function that can do
the thing more directly by returning a logical value if the result of which is
empty or not?
Thanks
Francois Rousseu
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