[R] how to skip a specific value when using apply() function to a matrix?

[Wu Gong]

Hi szhan,

I think Joshua gives all you wants -- scale is a really good function.

You can also make your own function work by setting an argument na.rm.

tmp1[tmp1==0]<-NA 
student<- function(x){    
    x<-(x-mean(x,na.rm=T))/sd(x,na.rm=T)
    return (x)
}
tmp4<-apply(tmp1, 2, student)



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