Pascal,

result_vector <- vector()
result <- vector("list", (length(test1)-1))
for(i in 1:(length(test1)-1))
{
  for(j in (i+1):length(test1))
  {
  result_vector[j-i] <- agrep(test1[i], test1[j], ignore.case = TRUE, value
= TRUE, max.distance = 0.1)
  }
  result[[i]]<- result_vector
}

I'm not sure what the problem is with the dimension/length of result which
is a list. But I just use the second line: result <- vector("list",
(length(test1)-1))

What am I missing?

Thank you Rui Barradas.

On Tue, Dec 11, 2012 at 4:25 PM, Rui Barradas <ruipbarradas@sapo.pt> wrote:

> Hello,
>
> And another error in line 2. It should be
>
> for(j in (i+1):length(test1))
>
>
> Hope this helps,
>
> Rui Barradas
>
> Em 11-12-2012 07:54, Pascal Oettli escreveu:
>
>  Hi,
>>
>> There is a mistake in the first line. It should be:
>> > for(i in 1:(length(test1)-1))
>>
>> Regards,
>> Pascal
>>
>>
>> Le 11/12/2012 16:01, surekha nagabhushan a écrit :
>>
>>> Hi all.
>>>
>>> This is my first message at R-help...so I'm hoping I have some beginner's
>>> luck and get some good help for my problem!
>>>
>>> FYI I have just started using R recently so my knowledge of R is pretty
>>> preliminary.
>>>
>>> Okay here is what I need help with - I need to know how to use agrep in a
>>>   for loop.
>>>
>>> I need to compare elements of a vector of names with other elements of
>>> the
>>> same vector.
>>>
>>> However if I use something like this:
>>>
>>> for(i in 1:length(test1)-1)
>>> {
>>>    for(j in i+1:length(test1))
>>>    {
>>>    result[[i]][j] <- agrep(test1[i], test1[j], ignore.case = TRUE, value
>>> =
>>> TRUE, max.distance = 0.1)
>>>    }
>>>
>>> }
>>>
>>> I get an error message saying - invalid 'pattern' argument. -* Error in
>>> agrep(test1[i], test1[j], ignore.case = TRUE, value = TRUE, max.distance
>>> =
>>> 0.1) : *
>>> *  invalid 'pattern' argument*
>>>
>>> Test 1 being - c("Vashi", "Vashi,navi Mumbai", "Thane", "Vashi,new
>>> Mumbai",
>>> "Thana", "Surekha", "Thane(w)", "surekhaN")
>>>
>>> This is the first time I'm using agrep, I do not understand how it works
>>> fully...
>>>
>>> Kindly help...
>>>
>>> Thank you.
>>>
>>> Su.
>>>
>>>     [[alternative HTML version deleted]]
>>>
>>> ______________________________**________________
>>> R-help@r-project.org mailing list
>>> https://stat.ethz.ch/mailman/**listinfo/r-help<https://stat.ethz.ch/mailman/listinfo/r-help>
>>> PLEASE do read the posting guide http://www.R-project.org/**
>>> posting-guide.html <http://www.R-project.org/posting-guide.html>
>>> and provide commented, minimal, self-contained, reproducible code.
>>>
>>>
>> ______________________________**________________
>> R-help@r-project.org mailing list
>> https://stat.ethz.ch/mailman/**listinfo/r-help<https://stat.ethz.ch/mailman/listinfo/r-help>
>> PLEASE do read the posting guide http://www.R-project.org/**
>> posting-guide.html <http://www.R-project.org/posting-guide.html>
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
>

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