[R] extremely simple "for loop" question

[Chris Bergstresser]

On 4/12/06, Paul Roebuck <roebuck at mdanderson.org> wrote:
> > I want to do a for loop in which m takes on the values
> > 1, 5, 10, 15, 20.  What is the syntax for doing that?
> >
> > I had been doing a loop for m in 1:20, but I only want
> > those values above.
>
> ?seq

... which doesn't handle the 1 in that sequence very elegantly.  You can do this

for (m in c(1, seq(5, 20, 5)))

   for the general case, but for the specific circumstance I'd do

for (m in c(1, 5, 10, 15, 20))

-- Chris