You need to specify a whole column. try qqnorm(table[,1])
On Thu, 2007-06-28 at 18:50 -0700, Jiong Zhang, PhD wrote:
> I want to qqnorm every column in a table. When I try the first column
> using
>
> qqnorm(table$column1), it worked.
>
> But when I use
>
> qqnorm(table[1]), it tells me "Error in stripchart(x1, ...) : invalid
> plotting method".
>
> What happen? How can I make a function that qqnorms every column?
Try this:
dat <- data.frame(x=rnorm(20), y= rnorm(20), z =rnorm(20))
par(mfrow=c(3,1))
sapply(dat, function (x) {qqnorm (x) ; qqline (x) } )
Cheers,
Simon
>
> thanks a lot.
>
> -jiong
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--
Simon Blomberg, BSc (Hons), PhD, MAppStat.
Lecturer and Consultant Statistician
Faculty of Biological and Chemical Sciences
The University of Queensland
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