[R] Not-In operator

[Phil Spector]

Colton -
    Have you looked at the invert= argument of grep()?
(In regular expressions, ^ means "beginning of string",
and ! has no special meaning.)

 					- Phil Spector
 					 Statistical Computing Facility
 					 Department of Statistics
 					 UC Berkeley
 					 spector at stat.berkeley.edu


On Mon, 28 Jun 2010, Colton Hunt wrote:

> I would like to use grep to return all the lines of a data frame that do not
> contain the letters HD. I have tried the ^ inside brackets as well as !. The
> data frame is one column consisting of spaces,numbers, and letters with
> several thousand rows.
> Thank you!
> Colton
>
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