On 29-02-2012, at 07:03, lidaky wrote: > Hi, > > today i wrote a function in R of the type: > > index.refraction <- function(Temp,Press, RH, CO2) > > When i try to plug a negative number in Temp, i got this type of error: > > " > n <- index.refraction(Temp= -40,100,80,CO2) > Messages d'avis : > 1: In Ops.ordered(left, right) : '-' is not meaningful for ordered factors > 2: In Ops.factor(left, right) : - not meaningful for factors > 3: In Ops.factor(left, right) : - not meaningful for factors > 4: In Ops.ordered(left, right) : '-' is not meaningful for ordered factors > 5: In Ops.factor(left, right) : - not meaningful for factors > 6: In Ops.factor(left, right) : - not meaningful for factors > "
Without the code of your function we can only guess. Please follow the posting guide. Berend ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
