On 05/29/2010 07:39 PM, dunner wrote:
I have written a function to emulate minitab's QQ plotting output (with SW
test and AD test results on the graph):
...
However, I get the following message when I try to apply it:
ab<-rnorm(1:100, 2)
aa<-log(ab)
Warning message:
In log(ab) : NaNs produced
Almost certainly negative numbers in ab - try:
ab<-abs(ab)
to flip these to positive or use a larger mean
ac<-(ab^2)
df<-data.frame(aa,ab,ac)
mtab.matrix(df)
Error in sort(y) : argument "y" is missing, with no default
mtab.norm(aa)
Error in sort(y) : argument "y" is missing, with no default
These errors look like they are happening in qqplot
Jim
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