[Rd] median(c(NA,NA),na.rm=T) fails (PR#713)

[gnw3@acm.org]

Full_Name: George N. White III
Version: 1.1.1
OS: Linux
Submission from: (NULL) (192.75.95.37)


Calling median(c(NA,NA), ns.rm=T) passes a "null" vector to sort.  I would
expect it to return "NA", as suggested below:

> median
function (x, na.rm = FALSE) 
{
    if (na.rm) 
        x <- x[!is.na(x)]
    else if (any(is.na(x))) 
        return(NA)
    n <- length(x)
    if (n == 0) return(NA)  ################ suggested fix
    half <- (n + 1)/2
    if (n%%2 == 1) {
        sort(x, partial = half)[half]
    }
    else {
        sum(sort(x, partial = c(half, half + 1))[c(half, half + 
            1)])/2
    }
}


-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-devel-request@stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._