Re: [R] Getting error message using R: Please help (it's coursework due in on Friday)

From: ethanhaas <ethanhaaswaswrong_at_gmail.com>
Date: Wed, 12 Dec 2007 05:33:22 -0800 (PST)

Although I was wrong on what I was trying to decompose that didn't work either however after a conversation with the lecturer the problem has been found and solved.

Gavin Simpson wrote:
>
>
> On Wed, 2007-12-12 at 05:03 -0800, ethanhaas wrote:

>> I was, and the answer is yes, but I figured the easiest way for you to
>> understand is for me to say exactly what I am trying to do. Perhaps I
>> don't
>> even need to decompose (although I think I do). If I can get past this
>> problem it would make everything else so much easier.

>
> Peter was trying to get you to see that you should be doing one of the
> following:
>
> dcm <- decompose(timeseries)
>
> or
>
> dcm <- decompose(using)
>
> *Not* decompose(information), which will try to decompose your data
> frame, which is not a timeseries object in the sense of ?ts and
> therefore doesn't have periods and the like, hence the error.
>
> Do either of the two suggestions that Peter clearly suggested you try
> (and I repeat above) work for you and give you what you want?
>
> HTH
>
> G
>
>> 
>> 
>> 
>> P.Dalgaard wrote:
>> > 
>> > ethanhaas wrote:
>> >> What I'm trying to do is have plots and summary statistics of x
>> >> (autocorrelations for example) where x refers to the data in using,
>> and I
>> >> thought decomposing would be the way to go about it.
>> >>
>> >>
>> >>   
>> > You are not listening. I give up.
>> > 
>> >> P.Dalgaard wrote:
>> >>   
>> >>> ethanhaas wrote:
>> >>>     
>> >>>> I simply called it information but I can also call it data if you
>> wish,
>> >>>> it
>> >>>> doesn't make a difference.
>> >>>> The timeseries is simply the time series of this data between the
>> two
>> >>>> dates
>> >>>> and using is the data up to 1990 as opposed to 1994.
>> >>>>
>> >>>>   
>> >>>>       
>> >>> And isn't it one of the latter two you want to decompose()?
>> >>>
>> >>>     
>> >>>> P.Dalgaard wrote:
>> >>>>   
>> >>>>       
>> >>>>> ethanhaas wrote:
>> >>>>>     
>> >>>>>         
>> >>>>>> I've been trying for the past 3 weeks to use R (much better than
>> >>>>>> Matlab
>> >>>>>> but I
>> >>>>>> am very bad with computers so I am very new to all of this) and
>> know
>> >>>>>> how
>> >>>>>> to
>> >>>>>> input the data (hey, it's a start!) but every time I type in the
>> >>>>>> following:
>> >>>>>>
>> >>>>>> dcm <- decompose(information)
>> >>>>>>
>> >>>>>> I get the following error message:
>> >>>>>>
>> >>>>>> Error in decompose(information) : time series has no or less than
>> 3
>> >>>>>> periods
>> >>>>>>
>> >>>>>> Could you please aid me so that I can progress to the next step.
>> What
>> >>>>>> I
>> >>>>>> am
>> >>>>>> in fact trying to do at the moment is plot a graph of the
>> information
>> >>>>>> so
>> >>>>>> I
>> >>>>>> had assumed it would be:
>> >>>>>>
>> >>>>>> dcm <- decompose(information)
>> >>>>>> Plot(dcm$trend)
>> >>>>>>
>> >>>>>> but obviously it does not appear to be the case.
>> >>>>>>
>> >>>>>> By the way the code I have right now in case it helps is:
>> >>>>>>
>> >>>>>> information <- scan("everything.txt")
>> >>>>>> timeseries <- ts(information, frequency = 11, start = c(1970,
>> 1994))
>> >>>>>> using <- window(timeseries, end = c(1990, 11))
>> >>>>>> dcm <- decompose(information)
>> >>>>>> Plot(dcm$trend)
>> >>>>>>
>> >>>>>>   
>> >>>>>>       
>> >>>>>>           
>> >>>>> Er, are you sure it is "information" that you want to decompose()?
>> (If
>> >>>>> so, what are the computations of "timeseries" and "using" supposed
>> to
>> >>>>> be
>> >>>>> good for?)
>> >>>>>
>> >>>>>     
>> >>>>>         
>> >>>>>> Thank you very much in advance, I really appreciate the help.
>> >>>>>>   
>> >>>>>>       
>> >>>>>>           
>> >>>>> -- 
>> >>>>>    O__  ---- Peter Dalgaard             Øster Farimagsgade 5,
>> Entr.B
>> >>>>>   c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
>> >>>>>  (*) \(*) -- University of Copenhagen   Denmark          Ph:  (+45)
>> >>>>> 35327918
>> >>>>> ~~~~~~~~~~ - (p.dalgaard_at_biostat.ku.dk)                  FAX: (+45)
>> >>>>> 35327907
>> >>>>>
>> >>>>> ______________________________________________
>> >>>>> 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.
>> >>>>>
>> >>>>>
>> >>>>>     
>> >>>>>         
>> >>>>   
>> >>>>       
>> >>> -- 
>> >>>    O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
>> >>>   c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
>> >>>  (*) \(*) -- University of Copenhagen   Denmark          Ph:  (+45)
>> >>> 35327918
>> >>> ~~~~~~~~~~ - (p.dalgaard_at_biostat.ku.dk)                  FAX: (+45)
>> >>> 35327907
>> >>>
>> >>> ______________________________________________
>> >>> 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.
>> >>>
>> >>>
>> >>>     
>> >>
>> >>   
>> > 
>> > 
>> > -- 
>> >    O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
>> >   c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
>> >  (*) \(*) -- University of Copenhagen   Denmark          Ph:  (+45)
>> > 35327918
>> > ~~~~~~~~~~ - (p.dalgaard_at_biostat.ku.dk)                  FAX: (+45)
>> > 35327907
>> > 
>> > ______________________________________________
>> > 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.
>> > 
>> > 
>> 

> --
> %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%
> Dr. Gavin Simpson [t] +44 (0)20 7679 0522
> ECRC, UCL Geography, [f] +44 (0)20 7679 0565
> Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk
> Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/
> UK. WC1E 6BT. [w] http://www.freshwaters.org.uk
> %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%
>
> ______________________________________________
> 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.
>
>
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Received on Wed 12 Dec 2007 - 13:44:56 GMT

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