Nothing
harmonicMean <-
function( index ){
harmonic_mean <- rep(NA, length(levels(factor(index)))-1)
for(i in 1:length(levels(factor(index)))-1){
harmonic_mean[i] <- (2/((1/length(index[index == 0 ]))+(1/length(index[index == i]))))
}
return(harmonic_mean)
}
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