All,
I am not understanding the scoping used in foreach when it is used
inside a function. I keep getting "could not find function" errors for
functions that are in memory when I try to use foreach within a function
call. I have a simple example below. "testFun" is in memory and works
when called by foreach directly, but when I place foreach in a function
called "helper" and then call helper, foreach cannot find "testFun".
Can anyone provide a fix? I hope its just a simple mistake on my part
and not a limitation of foreach.
> source(.trPaths[5], echo=TRUE, max.deparse.length=150)
> "testFun" <- function(m) {
+ out <- m*m
+ }
> out <- foreach(m=1:10, .combine=rbind) %dopar% testFun(m)
> "helper" <- function(i) {
+
+ out <- foreach(m=1:i, .combine=rbind) %dopar% testFun(m)
+ }
> out <- helper(10)
Error in testFun(m) : task 1 failed - "could not find function
"testFun""
>
Thanks,
Roger
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