[R] pmatch questions

[Uwe Ligges]

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
> 
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