################################################################################
# FUNCTION - reduce.dataset ####################################################
################################################################################
reduce.dataset <- function(dataset, times, uniformDistribution=NULL)
{
if(length(uniformDistribution)==0) { return(dataset[seq(1,nrow(dataset),times),]) }
else{
nr <- round(nrow(dataset)/times,0)
rowNumbers <- c(1:nrow(dataset))
densities <- density(uniformDistribution)
probabilities <- NULL
for(i in 1:nrow(dataset)) probabilities[i] <- densities$y[which.min(abs(densities$x-uniformDistribution[i]))]
useNumbers <- sample(rowNumbers, nr, replace = FALSE, prob = 1/probabilities)
return(dataset[useNumbers,])
}
}
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