[R] how to extract from list
Rui Barradas
ruipbarradas at sapo.pt
Tue Oct 16 16:09:09 CEST 2012
Hello,
Your code doesn't work, which libraries are you using? There are several
with function rgev.
And pargevn() also doesn't exist. Nor does the matrix/df inP.
(And, for reproducible example there's no need to replicate 50K times...)
Rui Barradas
Em 16-10-2012 13:41, Balqis escreveu:
> Ok here's the lines of codes:
>
> sIr=replicate(50000,ts(arima.sim(list(ar=0),n=150,innov=rgev(150,xi=0.2,
> mu=inP[1,5],sigma=inP[1,4]),start.innov=rgev(150,xi=0.2,
> mu=inP[1,5],sigma=inP[1,4]))))
>
> sIrr=data.frame(cbind(sIr))
>
> EsIpr=sapply(sIrr[1:100,1:20000],function(m) pargevn(lmom.ub(m)))
>
> kIpr=EsIpr[3,]#try to call for kappa
> Error in EsIpr[3, ] : incorrect number of dimensions
>
> #it turn out that the Eslpr is a list. It is kinda weird because previously
> I run the same routine for
>
> Eslr=sapply(sIrr[1:150,20000]), function (m) pargevn(lmom.ub(m))# it works
> out fine when I call
> kI=EsIr[3,]
>
> Thanks!
>
>
> On Tue, Oct 16, 2012 at 12:35 PM, Muhammad Rahiz
> <muhammad.rahiz at gmail.com>wrote:
>
>> Maybe something along the following lines?
>>
>> m <- rep(list(rnorm(10)),3) # dummy data
>>
>> data <- c()
>> for (a in 1:length(m)) {
>> data[a] <- m[[a]][1] }
>>
>> Muhammad
>>
>>
>> On Tue, Oct 16, 2012 at 1:17 PM, Balqis <aehan3616 at gmail.com> wrote:
>>
>>> Hi all,
>>>
>>> I have a list of 20000 data, and the list look like below. I wonder what
>>> is
>>> the simplest way to extract 'kappa' value (or 'xi' or 'alpha' for the
>>> matter) from each of the data. How can I simply code it without having to
>>> change the list to a dataframe first? Many thanks!
>>>
>>>
>>> $X19997
>>> xi alpha kappa
>>> 784.7718640 165.4065141 -0.2709599
>>>
>>> $X19998
>>> xi alpha kappa
>>> 860.7832604 215.1144980 -0.1769741
>>>
>>> $X19999
>>> xi alpha kappa
>>> 839.7692675 196.0103874 -0.3848809
>>>
>>> $X20000
>>> xi alpha kappa
>>> 847.6117040 212.3279185 -0.2576029
>>>
>>> regards,
>>> aehan
>>>
>>> [[alternative HTML version deleted]]
>>>
>>> ______________________________________________
>>> R-help at r-project.org 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.
>>>
>>
>>
>> --
>> Muhammad Rahiz
>> (za) +27 071 719 0104
>> (skype) muhammad.rahiz
>>
>>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
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