On 24/08/2007, at 12:51 PM, Moshe Olshansky wrote:
> This won't work since it produces a matrix (try this).
On the contrary, Patrick's solution is correct. I tried it. It
works just fine.
cheers,
Rolf Turner
> What should work is
> x[(1:nrow(x)) + nrow(x)*(v-1)]
>
> --- Johannes Graumann <[EMAIL PROTECTED]>
> wrote:
>
>> Thanks!
>>
>> Joh
>>
>> On Thursday 23 August 2007 12:01:50 you wrote:
>>> x[cbind(1:nrow(x), the.vector)]
>>>
>>> Patrick Burns
>>> [EMAIL PROTECTED]
>>> +44 (0)20 8525 0696
>>> http://www.burns-stat.com
>>> (home of S Poetry and "A Guide for the Unwilling S
>> User")
>>>
>>> Johannes Graumann wrote:
>>>> Hello,
>>>>
>>>> Imagine a data frame like so:
>>>>
>>>> Intensity0 Intensity1
>>>> 1 767432.1 451743.4
>>>> 2 3998988.0 4642145.0
>>>> 3 818974.6 552315.8
>>>>
>>>> and a vector like so:
>>>>
>>>> [1] 1 2 1
>>>>
>>>> How can I get R to produce a vector that contains
>> the value in one column
>>>> or the other depending on the vector? The result
>> should look like
>>>>
>>>> [1] 767432.1 4642145.0 818974.6
>>>>
>>>> Thanks for any hints!
>>>>
>>>> Joh
>>>>
>>>> ______________________________________________
>>>> R-help@stat.math.ethz.ch mailing list
>>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>>> PLEASE do read the posting guide
>>>> http://www.R-project.org/posting-guide.html and
>> provide commented,
>>>> minimal, self-contained, reproducible code.
>>
>>
>>> ______________________________________________
>> R-help@stat.math.ethz.ch mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained,
>> reproducible code.
>>
>
> ______________________________________________
> R-help@stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-
> guide.html
> and provide commented, minimal, self-contained, reproducible code.
######################################################################
Attention:\ This e-mail message is privileged and confidenti...{{dropped}}
______________________________________________
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
