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time series
3 messages · Dr. Alireza Zolfaghari, stephen sefick, Giovanni Petris
I think arima may do the trick. I have not used it, but this is the functionality I have pulled from the ether. On Mon, Sep 27, 2010 at 5:02 PM, Dr. Alireza Zolfaghari
<ali.zolfaghari at gmail.com> wrote:
Hi list, I have a set of data which I want to use time series analysis in R in order to forecast the value for future. I know there are some R functions, but not sure how to use them. Would you please help me if you are familiar with time series in R? I want to get value for Nov 2012 using the following data. thanks Alireza time value Mar-80 72 Jun-80 77.4 Sep-80 81.9 Dec-80 81 Mar-81 80.1 Jun-81 77.4 Sep-81 67.5 Dec-81 68.4 Mar-82 55.8 Jun-82 42.3 Sep-82 32.4 Dec-82 22.5 Mar-83 25.2 Jun-83 32.4 Sep-83 27 Dec-83 36 Mar-84 33.3 Jun-84 41.4 Sep-84 20.7 Dec-84 18.9 Mar-85 11.7 Jun-85 15.3 Sep-85 9 Dec-85 13.5 Mar-86 17.1 Jun-86 16.2 Sep-86 24.3 Dec-86 28.8 Mar-87 33.3 Jun-87 41.4 Sep-87 46.8 Dec-87 61.2 Mar-88 68.4 Jun-88 74.7 Sep-88 58.5 Dec-88 57.6 Mar-89 63.9 Jun-89 52.2 Sep-89 50.4 Dec-89 50.4 Mar-90 42.3 Jun-90 38.7 Sep-90 26.1 Dec-90 25.2 Mar-91 27 Jun-91 18.9 Sep-91 15.3 Dec-91 15.3 Mar-92 16.2 Jun-92 17.1 Sep-92 13.5 Dec-92 15.3 Mar-93 18.9 Jun-93 15.3 Sep-93 19.8 Dec-93 27.9 Mar-94 33.3 Jun-94 51.3 Sep-94 40.5 Dec-94 60.3 Mar-95 59.4 Jun-95 58.5 Sep-95 47.7 Dec-95 57.6 Mar-96 45.9 Jun-96 37.8 Sep-96 30.6 Dec-96 37.8 Mar-97 40.5 Jun-97 34.2 Sep-97 28.8 Dec-97 26.1 Mar-98 26.1 Jun-98 15.3 Sep-98 11.7 Dec-98 10.8 Mar-99 10.8 Jun-99 13.5 Sep-99 22.5 Dec-99 32.4 Mar-00 39.6 Jun-00 32.4 Sep-00 35.1 Dec-00 27 Mar-01 29.7 Jun-01 35.1 Sep-01 34.2 Dec-01 42.3 Mar-02 51.3 Jun-02 61.2 Sep-02 61.2 Dec-02 57.6 Mar-03 53.1 Jun-03 45 Sep-03 48.6 Dec-03 54.9 Mar-04 61.2 Jun-04 63 Sep-04 71.1 Dec-04 78.3 Mar-05 70.2 Jun-05 73.8 Sep-05 77.4 Dec-05 75.6 Mar-06 76.5 Jun-06 72.9 Sep-06 76.5 Dec-06 74.7 Mar-07 72 Jun-07 72 Sep-07 64.8 Dec-07 60.3 Mar-08 43.2 Jun-08 40.5 Sep-08 30.6 Dec-08 29.7 Mar-09 24.3 Jun-09 23.4 Sep-09 20.7 Dec-09 25.2 Mar-10 38.7 Jun-10 32.4 Sep-10 42.3 ? ? ? ?[[alternative HTML version deleted]]
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Stephen Sefick ____________________________________ | Auburn University? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? | | Department of Biological Sciences? ? ? ? ?? | | 331 Funchess Hall? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? | | Auburn, Alabama? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? | | 36849? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? | |___________________________________| | sas0025 at auburn.edu? ? ? ? ? ? ? ? ? ? ? ? ? ?? | | http://www.auburn.edu/~sas0025? ? ? ? ? ?? | |___________________________________| Let's not spend our time and resources thinking about things that are so little or so large that all they really do for us is puff us up and make us feel like gods.? We are mammals, and have not exhausted the annoying little problems of being mammals. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? -K. Mullis "A big computer, a complex algorithm and a long time does not equal science." ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? -Robert Gentleman
Unless you tell us what model or what forecasting technique you want to use, it seems to me that this is more a question about Statistics than about using R. Best, Giovanni Petris
On Mon, 2010-09-27 at 23:02 +0100, Dr. Alireza Zolfaghari wrote:
Hi list, I have a set of data which I want to use time series analysis in R in order to forecast the value for future. I know there are some R functions, but not sure how to use them. Would you please help me if you are familiar with time series in R? I want to get value for Nov 2012 using the following data. thanks Alireza time value Mar-80 72 Jun-80 77.4 Sep-80 81.9 Dec-80 81 Mar-81 80.1 Jun-81 77.4 Sep-81 67.5 Dec-81 68.4 Mar-82 55.8 Jun-82 42.3 Sep-82 32.4 Dec-82 22.5 Mar-83 25.2 Jun-83 32.4 Sep-83 27 Dec-83 36 Mar-84 33.3 Jun-84 41.4 Sep-84 20.7 Dec-84 18.9 Mar-85 11.7 Jun-85 15.3 Sep-85 9 Dec-85 13.5 Mar-86 17.1 Jun-86 16.2 Sep-86 24.3 Dec-86 28.8 Mar-87 33.3 Jun-87 41.4 Sep-87 46.8 Dec-87 61.2 Mar-88 68.4 Jun-88 74.7 Sep-88 58.5 Dec-88 57.6 Mar-89 63.9 Jun-89 52.2 Sep-89 50.4 Dec-89 50.4 Mar-90 42.3 Jun-90 38.7 Sep-90 26.1 Dec-90 25.2 Mar-91 27 Jun-91 18.9 Sep-91 15.3 Dec-91 15.3 Mar-92 16.2 Jun-92 17.1 Sep-92 13.5 Dec-92 15.3 Mar-93 18.9 Jun-93 15.3 Sep-93 19.8 Dec-93 27.9 Mar-94 33.3 Jun-94 51.3 Sep-94 40.5 Dec-94 60.3 Mar-95 59.4 Jun-95 58.5 Sep-95 47.7 Dec-95 57.6 Mar-96 45.9 Jun-96 37.8 Sep-96 30.6 Dec-96 37.8 Mar-97 40.5 Jun-97 34.2 Sep-97 28.8 Dec-97 26.1 Mar-98 26.1 Jun-98 15.3 Sep-98 11.7 Dec-98 10.8 Mar-99 10.8 Jun-99 13.5 Sep-99 22.5 Dec-99 32.4 Mar-00 39.6 Jun-00 32.4 Sep-00 35.1 Dec-00 27 Mar-01 29.7 Jun-01 35.1 Sep-01 34.2 Dec-01 42.3 Mar-02 51.3 Jun-02 61.2 Sep-02 61.2 Dec-02 57.6 Mar-03 53.1 Jun-03 45 Sep-03 48.6 Dec-03 54.9 Mar-04 61.2 Jun-04 63 Sep-04 71.1 Dec-04 78.3 Mar-05 70.2 Jun-05 73.8 Sep-05 77.4 Dec-05 75.6 Mar-06 76.5 Jun-06 72.9 Sep-06 76.5 Dec-06 74.7 Mar-07 72 Jun-07 72 Sep-07 64.8 Dec-07 60.3 Mar-08 43.2 Jun-08 40.5 Sep-08 30.6 Dec-08 29.7 Mar-09 24.3 Jun-09 23.4 Sep-09 20.7 Dec-09 25.2 Mar-10 38.7 Jun-10 32.4 Sep-10 42.3 [[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.