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I am having some problems normalizing data. 

normalize <- function(x) {
    num <- x - min(x)
    denom <- max(x) - min(x)
    return (num/denom)
}

That is my function which I have created. But when trying to apply this function to the dataset using 

kdd.normalize <- as.data.frame(lapply(kddcup.data[1:41], normalize))

The console displays:

2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L), na.rm = FALSE)
zx8754
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William Sæbø
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  • Welcome to Stack Overflow! Please read the info about [how to ask a good question](http://stackoverflow.com/help/how-to-ask) and how to give a [reproducible example](http://stackoverflow.com/questions/5963269). This will make it much easier for others to help you. – zx8754 Apr 12 '16 at 09:39
  • The data is the KDD Cup - full dataaset - I tried with the 10 % sample to make sure it was not my machine http://kdd.ics.uci.edu/databases/kddcup99/kddcup99.html – William Sæbø Apr 12 '16 at 09:47
  • Could you paste a result of `dput(head(yourData, 20))`? – m-dz Apr 12 '16 at 09:52

0 Answers0