On Feb 4, 2011, at 10:48 AM, DB1984 wrote:


Thanks for the feedback Patrizio - but your function is performing the
shapiro.test on columns instead of rows...

I tried:
nt<-data.frame(#a dataframe with 6 columns and 9 rows)

nr <- nrow(nt)


test <- apply(nt, nt[1:nr,], shapiro.test)

Error in ds[-MARGIN] : invalid subscript type 'list'

The second argument to apply needs to be a (short) numeric vector. Your request suggest you simply want the number 1, since that would tell apply to use the function on rows.



fred<-data.frame(sapply(test,function(x)c(x$statistic, x$p.value)))


But picked up the error above. Do I still require a loop to apply this over
rows?


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