On Nov 22, 2010, at 8:38 PM, joeponzio wrote:
hello r users,
i'm trying to use the apply method on a function with several
inputs, but
cannot figure out how to send multiple arguments to the function (not
multiple runs of the same function, but one run of the function
including
two variables - each used within the function).
a <- c(1:10,999,999,999)
b <- c(11:20,999,999,999)
tfun <- function(x,y){
if( (x = 1 & y !=999) || (x > 1 & x < 999 & y == 999) )
There is a problem with that first logical test, assigns 1 to x rather
than testing.
x1 <- 1
else
x1 <-0
}
> mapply("tfun", a, b)
[1] 1 1 1 1 1 1 1 1 1 1 0 0 0
(but see above if that were not what you expected.)
#this doesn't work - gives an error " 'y' is missing
tfilt <- sapply(data.frame(a,b), tfun)
thanks,
joe
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