[R] Cannot use negative argument in function

[Berend Hasselman]

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