[R] Simple - Finding vector in a vector
Mike Spam
ichmagspam at googlemail.com
Mon Oct 8 15:38:48 CEST 2012
Sorry, i just realized, that it output the sum of all vectors. I can
work with this function but it would be much faster and easier if it
would be possible to get the positions of evry match.
example:
NA 1 NA 1 1 1 1 1 1 NA 1
rle returns
lengths: int [1:6] 1 1 1 6 1 1
what i need would be something like,
1 1 1 3 3 3 3 1 1
but anyway i can work with rle, if there is no suitable function.
thanks,
Nico
2012/10/8 Mike Spam <ichmagspam at googlemail.com>:
> Hey Rui,
>
> Perfect! Thanks!! :)
>
> Nico
>
> 2012/10/8 Rui Barradas <ruipbarradas at sapo.pt>:
>> Hello,
>>
>> See ?rle
>>
>> Hope this helps,
>>
>> Rui Barradas
>> Em 08-10-2012 13:55, Mike Spam escreveu:
>>>
>>> Hi,
>>>
>>> just a simple question.
>>> Assumed i have a vector,
>>>
>>> FALSE TRUE TRUE TRUE FALSE TRUE FALSE TRUE FALSE
>>> or
>>> NA 1 1 1 NA 1 NA 1 NA
>>>
>>> what i need is the position where an element is the same - three (or
>>> in general multiple) times in a row.
>>>
>>> in this case: i want to get the position where it is TRUE TRUE TRUE or 1 1
>>> 1
>>> it doesn't matter if it is the first, middle or last element. So the
>>> output could be 2 or 3 or 4
>>>
>>> My idea would be to lag the vector and calc differences... but i would
>>> prefer any build in (or time saving) function. :)
>>>
>>> thanks,
>>>
>>> Nico
>>>
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>>
>>
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