[R] What is the correct way of using function C() for factors:

[Svetlana Eden]

The funciton c() works differently for strings and for factors:


For strings:

> l = c('a', 'b')
> l
[1] "a" "b"


For factors:

> l = c(factor('a'), factor('b'))
> l
[1] 1 1


What should be the right technique for merging factors?




-- 
Svetlana Eden        Biostatistician II            School of Medicine
                     Department of Biostatistics   Vanderbilt University