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Testing for empty result of which
3 messages · Francois Rousseu, Phil Spector, Richard M. Heiberger
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 spector at 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 [[alternative HTML version deleted]]
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