[R] Proper use of grep

[Erik Iverson]

Doran, Harold wrote:
> Thanks. Yes, I did that on a toy data set and with my real data. It
> *seems* to have worked. I just work with grep so rarely that I didn't
> want to miss something.

Yes, I see no reason why it won't work.  You can do another check 
'manually'. You know how many of each you expect by

 >table(all$Classical.Statistic)

So you can add up the ones that you care about, and then make sure that 
your resulting subset using grep has that many rows...