[R] HELP asin transformation

[Ben Bolker]

CHIRIBOGA Xavier <xavier.chiriboga <at> unine.ch> writes:

> 
> Dear all,
> 
> I attempted to transform my data using "asin" but a WARNING message appears:
> 
> dat1$Abu.tr<-asin(sqrt(dat1$Abundance/100))
> Warning message:
> In asin(sqrt(dat1$Abundance/100)) : NaNs produced
> 
> What does it mean? Is it a problem? How can I solve this?
> 
> Thank you!
> 
> XAVIER

  To follow up on this, try printing

dat1$Abundance[is.na(dat1$Abu.tr)]

to see which values are causing the problem.