R help - Mar 2003 - weighted.mean and na.rm=T in R-1.6.2

Hi

It looks like the na.rm flag is not working in function weighted.mean.
> weighted.mean(mat95$U,mat95$fpanual)
[1] NA
> weighted.mean(mat95$U,mat95$fpanual,na.rm=TRUE)
[1] NA
> mat95 <- mat95[!is.na(mat95$fpanual),]
> weighted.mean(mat95$U,mat95$fpanual)
[1] 14.93259


Regards

EJ

It seems you have NA's in the weights.  But from ?weighted.mean:

Details:

     If `w' is missing then all elements of `x' are given the same
     weight.

     Missing values in `w' are not handled.

Here, `w' is the vector of weights.

-roger
_______________________________
UCLA Department of Statistics
rpeng at stat.ucla.edu
http://www.stat.ucla.edu/~rpeng

On 18 Mar 2003, Ernesto Jardim wrote:
> Hi
> 
> It looks like the na.rm flag is not working in function weighted.mean.
> 
> > weighted.mean(mat95$U,mat95$fpanual)
> [1] NA
> > weighted.mean(mat95$U,mat95$fpanual,na.rm=TRUE)
> [1] NA
> > mat95 <- mat95[!is.na(mat95$fpanual),]
> > weighted.mean(mat95$U,mat95$fpanual)
> [1] 14.93259
> 
> 
> Regards
> 
> EJ
> 
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