Nothing
match.dat.fun <-
function(dat1, dat2){
ids=as.matrix(unique(dat1[, 1]))
n.len=length(ids)
res=NULL
for(i in 1:n.len){
idx=(dat2[,1]==ids[i])
dat.i=dat2[idx, ]
res=rbind(res, dat.i)
}
return(res)
}
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