[R] programming advice
Fred JEAN
frederic.jean at univ-brest.fr
Thu Jun 22 17:58:06 CEST 2006
Dear R users
I want to compute Kendall's Tau between two vectors x and y.
But x and y may have zeros in the same position(s) and I wrote the
following function to be sure to drop out those "double zeros"
"cor.kendall" <- function(x,y) {
nox <- c()
noy <- c()
#
for (i in 1:length(x)) if (x[i]!= 0 | y[i] != 0)
nox[length(nox)+1]<- x[i]
for (i in 1:length(y)) if (x[i]!= 0 | y[i] != 0)
noy[length(noy)+1]<- y[i]
#
res.kendall <- cor.test(nox,noy,method = "kendall",exact=F)
return(list(x=nox,y=noy,res.kendall,length(nox)))
}
Do you know a more elegant way to achieve the same goal ?
(I'm sure you do : it's a newbie's program actually)
--
Fred
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