similar to: Newbie question

Hi R-users, I have a question relating to the HoltWinters() function. I am trying to forecast a series using the Holt Winters methodology but I am getting some unusual results. I had previously been using R for Windows version 2.7.2 and have just started using R 2.9.1. While using version 2.7.2 I was getting reasonable results however upon changing versions I found I started to see unusual

Hello, In order to do a future forecast based on my past Time Series data sets (salespricesproduct1, salespricesproduct2, etc..), I used arima() functions with different parameter combinations which give the smallest AIC. I also used auto.arima() which finds the parameters with the smallest AICs. But unfortuanetly I could not get satisfactory forecast() results, even sometimes catastrophic

Hi, I'd like to know if the Holt-Winters function in R can modify the alpha paremeter in an "intelligent" way. I know it can vary from 0 to 1. Wich mathematical formula does it use to calculate the correct value of alpha? Thanks, bye. Carlo

1. This is an imaginary data on monthly outcomes of 2 years and I want to forecast the outcome for next 12 months of next year. data Data1; input Yr Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec; datalines; 2008 12 13 12 14 13 12 11 15 10 12 12 12 2009 12 13 12 14 13 12 11 15 10 12 12 12 ; run; I converted the above data into the below format to use it in R as it was giving error: asking

Dear helpers I'm having a problem with function HoltWinters from package ts. I have a time series that I want to fit an Holt-Winters model and make predictions for the next values. I've already built an object of class ts to serve as input to HoltWinters. But then I get an error; I've used HoltWinters a lot of times and this never hapened > data.HW<-HoltWinters(data.ts) Error

Dear R Helpers, Currently I'm working with the ts package of R and created a TimeSerie from pixels extracted from satellite imagery(S10 NDVI data, 10 daily composites). I'm trying to decompose this signal in different signals (seasonal and trend). When testing out the STL method is says => Only univariate timeseries are allowed, but the current Timeserie I'm using is univariate!

Dear Members, I have been searching for a package in R which can handle multiple seasonality suggested by taylor(2003). It will be great help if anybody has used this on R before (i.e. which package). Thanks in Advance. Best Regards Atul Malik [[alternative HTML version deleted]]

Hello, I asked this question on the r-finance list server and didn't get a reply. Thought I would try here to. I am trying to deseasonalize some financial time series data and I wanted some feedback on the best methods for doing this. I found two Centered Moving Average and Holt-Winters. Which is better and/or more appropriate for financial time series data in your opinion? I understand

please i've a big problem. i've to do a econometric-quantitative methods assignment about the canadian lynx, the problem is that i really i don't know how to use r and how to apply all the steps. I begun the time plot, ACF and PACF but i'm not able to decide what is the correct model of ARIMA, Holt-winter, ecc to forecast the next 20 years of canadian lynx's cyle... if someone

Is there any good information on doing WAP/WML/Mobile Internet Access with Ruby on Rails. I''ve tried surfing the web, but couldn''t come up with anything substancial. I would appreciate any input in this regard. Thanks in advance Gopal -- Posted via http://www.ruby-forum.com/.

Hello, I am very new to R and Time Series. I need some help including R codes about the following issues. I' ll really appreciate any number of answers... # I have a time series data composed of 24 values: myinput = c(n1,n2...,n24); # In order to make a forecasting a, I use the following codes result1 = arima(ts(myinput),order = c(p,d,q),seasonal = list(order=c(P,D,Q))) result2 =

Buenas, esta pregunta es un poco elemental, pero estoy haciendo mis primeras experiencias en R. Yo tengo un CSV con el siguiente formato... fecha;Gastos;media móvil;Holt Winter 31/08/02;2498,5;;2498,5 29/09/02;2250,93;2320,63;2424,229 31/10/02;2212,46;2097,87;2360,6983 30/11/02;1830,22;2092,78;2201,55481 ,,,,,,, los guardo en un dataframe con gastos=read.csv2("indice_gastos.csv"),

I am facing a strange problem related to authentication of NT users accessing the SAMBA server. Here are the details: Server: Solaris 9, SUN Ultra 60, SAMBA 2.2.7a with PAM and WINBIND Client: Windows XP, NT4.0, 2000 Symptoms: Created a share \\server\test (UNIX: /export/SMB/test) with access to group 'TestGoup' where 'TestUser' is a member. 'TestUser' is a member of

I have read ?zoo but am not sure how to relate the parameters (x, order.by, frequency, and style) to my data.frame. The structure of the data.frame is 'data.frame': 11169 obs. of 4 variables: $ stream : Factor w/ 37 levels "Burns","CIL",..: 1 1 1 1 1 1 1 1 1 1 ... $ sampdate: Date, format: "1987-07-23" "1987-09-17" ... $ param : Factor w/

Hi guys, I am understanding OpenCL compilation flow on GPU in order to develop OpenCL runtime for a new hardware. I understood that OpenCL compiler is part of a vendor's runtime library which is the heart of OpenCL. Since OpenCL kernel is compiled at runtime, hence at high level its compilation takes place in two steps: i. source code is first converted to intermediate code. ii.

Hi, I created a extension in Asterisk, the extension has been configured in Android softphone 3cx. When I tried to call from Andorid phone to some other IP extension which is registered in Asterisk, I am not able to hear the voice, when I check the asterisk log or wireshark there is only one way RTP traffic, from Android I am connecting to Asterisk via 2G GSM network. Any idea would be

Hello Developers, This is regards to my project plan. I am an engineering student and passionate about everything related to mobile, web and Compiler Design specially for embedded industry. I have experience of C/C++ language, developing GPU programming using OpenCL and shader language in Unix OS. I want to work on tools to make GPU computing available more simply, such as transparent LLVM

Hi, =20 I=92m looking for inspiration on how to get Samba (setup as a Domain controller)=20 To authenticate its users by AAA products like Safeword from = securecomputing (HYPERLINK "http://www.safeword.com/"www.safeword.com) or RSA SecureID =96 HYPERLINK "http://www.rsa.com/"www.rsa.com=20 =20 Would appreciate responses from you kind folks =20 Rgds Gopal --=20 No

Hi, I am using Asterisk 1.2.24, I have written my dialplan to land with an IVR with the same time if the customer knows the parties extensions they can dial directly, but what happens is sometimes its working and sometime its not working. My extensions.conf as follows, [incoming] exten => 052477302,1,Wait(2) exten => 052477302,2,NoOp(${CALLERIDNUM}) exten =>

Hi everyone, I have rhel 6.x 64-bit machine and I want to install llvm-3.3. clang-3.3. Can anyone share the download link for the rhel-6 compatible (rpm package)? Regards, Gopal -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20131209/20717fab/attachment.html>