[R] mean and sd for a Dataframe

[Ramya]

hi there,
I need to subtract each value in the dataframe from the mean of the column
and divide by the
standard deviation of the column.


> dim(a)
[1] 22011    52

data2 <- sapply(seq(from = 2, by = 1, length = 50), function(e){
rbind((a[[e]] - mean(a[,e]))/sd(a[,e]))
})

Does this look right????

Any help would be appreciated.

Thanks
RT


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