On Apr 1, 2011, at 5:56 PM, array chip wrote:
Hi, I tried to pass the function dist() as an argument, but got an
error
message. However, almost the same code with mean() as the function
to be passed,
it works ok.
foo<-function (x,
xfun = dist)
{
xfun(x)
}
foo(matrix(1:100,nrow=5))
Error in foo(matrix(1:100, nrow = 5)) : could not find function "xfun"
Works on my machine.
> foo(matrix(1:100,nrow=5))
1 2 3 4
2 4.472136
3 8.944272 4.472136
4 13.416408 8.944272 4.472136
5 17.888544 13.416408 8.944272 4.472136
You have probably overwritten `dist` with a non-functional object.
Try rm(dist) and re-run:
foo<-function (x,
xfun = mean)
{
xfun(x)
}
foo(1:10)
[1] 5.5
what am I missing here?
Thinking about your full workspace, I would guess.
--
David Winsemius, MD
West Hartford, CT
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