[R] how to initial a list to store data result?

[David Winsemius]

On Jun 21, 2010, at 7:18 PM, song song wrote:

> May I ask how to initialize a list?
>
> usually I will use " result=list(0) "  to do this. is this right?

There is now something in that list, namely an element whose value is  
zero. If you append to it with the c() function, the 0 will still be  
there.

 > result=list(0)
 > result=c(result, 5)
 > result
[[1]]
[1] 0

[[2]]
[1] 5

What's wrong with

result=list()
result=c(result, 5)

 > result
[[1]]
[1] 5


David Winsemius, MD
West Hartford, CT