R help - Oct 2003 - pmatch questions

Dear all,
Below there are two, simple - I suppose, questions on using pmatch():
> pmatch("xx", c("cc","xxa"))
[1] 2
> pmatch("a", c("cc","xxa"))
[1] NA
> pmatch("xx", c("cc","xxa","xxb"))
[1] NA

I would like that the second call returns also 2, and the third call returns
c(2,3)
is it possible?

many thanks
vito

Vito Muggeo wrote:
> Dear all,
> Below there are two, simple - I suppose, questions on using pmatch():
> 
> 
>>pmatch("xx", c("cc","xxa"))
> 
> [1] 2
> 
>>pmatch("a", c("cc","xxa"))
> 
> [1] NA
> 
>>pmatch("xx",
c("cc","xxa","xxb"))
> 
> [1] NA
> 
> I would like that the second call returns also 2, and the third call
returns
> c(2,3)
> is it possible?
You are looking for grep().

Uwe Ligges

> many thanks
> vito
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help

>>>>> "Vito" == Vito Muggeo <vito.muggeo at
giustizia.it>
>>>>>     on Thu, 2 Oct 2003 11:03:38 +0200 writes:
    Vito> Dear all,
    Vito> Below there are two, simple - I suppose, questions on using
pmatch():

    >> pmatch("xx", c("cc","xxa"))
    Vito> [1] 2
    >> pmatch("a", c("cc","xxa"))
    Vito> [1] NA
    >> pmatch("xx",
c("cc","xxa","xxb"))
    Vito> [1] NA

    Vito> I would like that the second call returns also 2, and
    Vito> the third call returns c(2,3) is it possible?

yes, if you use  grep() instead of pmatch()

{and grep() *is* mentioned in the "See Also" section of
 help(pmatch) which you have consulted before asking, right ?}

    Vito> many thanks

you're welcome.
Martin