Thanks guys for the suggestions guys- I come across this problem a lot but
now I have many solutions.
Thank you,
Stephen
--- Peter Dalgaard <[EMAIL PROTECTED]> wrote:
> Peter Dalgaard wrote:
> > Stephen Tucker wrote:
> >
> >> Dear R-helpers,
> >>
> >> Does anyone know how to use regular exp
I use regexpr() instead of grep() in cases like this, e.g.:
x2[regexpr("exclude",x2)==-1]
(regexpr returns a vector of the same length as character vector given
it, so there's no problem with it returning a zero length vector)
-- Tony Plate
Peter Dalgaard wrote:
> Stephen Tucker wrote:
>> Dear
Peter Dalgaard wrote:
> Stephen Tucker wrote:
>
>> Dear R-helpers,
>>
>> Does anyone know how to use regular expressions to return vector elements
>> that don't contain a word? For instance, if I have a vector
>> x <- c("seal.0","seal.1-exclude")
>> I'd like to get back the elements which do n
Find the ones that match and then remove them from the full set with 'setdiff'.
> x <- c("seal.0","seal.1-exclude")
> x.match <- grep("exclude", x) # find matches
> x.match
[1] 2
> setdiff(seq_along(x), x.match) # exclude the matches
[1] 1
>
On 4/25/07, Peter Dalgaard <[EMAIL PROTECTED]> wrote
Stephen Tucker wrote:
> Dear R-helpers,
>
> Does anyone know how to use regular expressions to return vector elements
> that don't contain a word? For instance, if I have a vector
> x <- c("seal.0","seal.1-exclude")
> I'd like to get back the elements which do not contain the word "exclude",
> us
Dear R-helpers,
Does anyone know how to use regular expressions to return vector elements
that don't contain a word? For instance, if I have a vector
x <- c("seal.0","seal.1-exclude")
I'd like to get back the elements which do not contain the word "exclude",
using something like (I know this doe
