R help - May 2012 - iterate over vector with "range vector" inside

Hello,
   Have anybody a hint,  how I could iterate over the vector below.
   So I'll wish only 8 iterations. Put the "range vector" in c()
didn't help.
   for(i in c(1,2,3,4,5,11:20,21:50,51:100)) {
   sum(dfc[i,"cnt"]) # or similar actions
   }
   Thanks in advance
   Christian

use 'list' instead of 'c'



Sent from my iPad

On May 22, 2012, at 5:23, chschulz at email.de wrote:
> 
>   Hello,
>   Have anybody a hint,  how I could iterate over the vector below.
>   So I'll wish only 8 iterations. Put the "range vector" in
c() didn't help.
>   for(i in
c(1,2,3,4,5,11:20,21:50,51:http://spinroot.com/spin/Doc/Book91_PDF/x20v_1991.pdf))
{
>   sum(dfc[i,"cnt"]) # or similar actions
>   }
>   Thanks in advance
>   Christian
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