On Tue, 2006-06-06 at 17:08 +0100, Prof Brian Ripley wrote:
> On Tue, 6 Jun 2006, Marc Schwartz (via MN) wrote:
>
> > On Tue, 2006-06-06 at 11:12 +0100, Prof Brian Ripley wrote:
> >> On Mon, 5 Jun 2006, Marc Schwartz (via MN) wrote:
> >>
> >>> Hi all,
> >>>
> >>> Based upon an offlist communicatio
On Tue, 6 Jun 2006, Marc Schwartz (via MN) wrote:
> On Tue, 2006-06-06 at 11:12 +0100, Prof Brian Ripley wrote:
>> On Mon, 5 Jun 2006, Marc Schwartz (via MN) wrote:
>>
>>> Hi all,
>>>
>>> Based upon an offlist communication this morning, I am somewhat confused
>>> (more than I usually am on most M
On Tue, 2006-06-06 at 11:12 +0100, Prof Brian Ripley wrote:
> On Mon, 5 Jun 2006, Marc Schwartz (via MN) wrote:
>
> > Hi all,
> >
> > Based upon an offlist communication this morning, I am somewhat confused
> > (more than I usually am on most Monday mornings...) about the use of
> > grep() with fa
On Mon, 5 Jun 2006, Marc Schwartz (via MN) wrote:
> Hi all,
>
> Based upon an offlist communication this morning, I am somewhat confused
> (more than I usually am on most Monday mornings...) about the use of
> grep() with factors as the 'x' argument.
>
> The argument guidance in ?grep indicates:
>
On 6/5/06, Bill Dunlap <[EMAIL PROTECTED]> wrote:
> On Mon, 5 Jun 2006, Marc Schwartz (via MN) wrote:
>
> > > > > grep("[a-z]", factor(letters))
> > > > numeric(0)
> > >
> > > I was recently surprised by this also. In addition, if
> > > R's grep did support factors in this way, what sort of
> > >
On Mon, 5 Jun 2006, Marc Schwartz (via MN) wrote:
> > > > grep("[a-z]", factor(letters))
> > > numeric(0)
> >
> > I was recently surprised by this also. In addition, if
> > R's grep did support factors in this way, what sort of
> > object (factor or character) should it return when value=T?
> > I
Marc Schwartz (via MN) wrote:
> On Mon, 2006-06-05 at 13:45 -0700, Bill Dunlap wrote:
>
>>On Mon, 5 Jun 2006, Marc Schwartz (via MN) wrote:
>>
>>
>>>Based upon an offlist communication this morning, I am somewhat confused
>>>(more than I usually am on most Monday mornings...) about the use of
>>>g
On Mon, 2006-06-05 at 13:45 -0700, Bill Dunlap wrote:
> On Mon, 5 Jun 2006, Marc Schwartz (via MN) wrote:
>
> > Based upon an offlist communication this morning, I am somewhat confused
> > (more than I usually am on most Monday mornings...) about the use of
> > grep() with factors as the 'x' argum
On Mon, 5 Jun 2006, Marc Schwartz (via MN) wrote:
> Based upon an offlist communication this morning, I am somewhat confused
> (more than I usually am on most Monday mornings...) about the use of
> grep() with factors as the 'x' argument.
> ...
> > grep("[a-z]", letters)
> [1] 1 2 3 4 5 6
Hi all,
Based upon an offlist communication this morning, I am somewhat confused
(more than I usually am on most Monday mornings...) about the use of
grep() with factors as the 'x' argument.
The argument guidance in ?grep indicates:
x, text a character vector where matches are sought. Coerced to
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