You need to set the frequency attribute of your time series. E.g.,
HoltWinters(ts(sample(100))) HoltWinters(ts(sample(100), frequency = 4)) # Quarterly data See ?ts for what frequency is and to figure out what makes sense for your problem. Best, Michael On Fri, Jun 8, 2012 at 9:49 AM, anindya55 <anindy...@gmail.com> wrote: > Hi, > > I have the following data in a csv file > 49893878, 54350306, 68914033, 46888379, 75506404, > 54164263, 62846960, 78304638, 63721932, 70269568, 60440103, 79784327, > 65918962, 76581629, 72016677, 47225594, 93944513, 65793666, 82709931, > 87852261, 75876270, 88715213, 65496028, 80160380, 66089429, 106857813, > 76237641, 59301581, 78705651, 66108909, 77685572, 74416530, 72618166, > 82060938, 65326366, 71710371, 70695772 > > I tried to do HoltWinters with seasonality with this data but keep getting > error. > > First I used the following code: > > time_data1<-as.ts(time_data) > HoltWinters(time_data1,gamma=TRUE) > > But it gave the following error - "Error in decompose(ts(x[1L:wind], start > = start(x), frequency = f), seasonal) : > time series has no or less than 2 periods" > > Then I tried the following code and got the same error:- > > time_data1<-as.ts(cbind(time_data,c(1:length(time_data)))) > HoltWinters(time_data1,gamma=TRUE) > > After that I tried the following code and got the same error:- > > > time_data1<-as.ts(cbind(c(1:length(time_data)),time_data)) > HoltWinters(time_data1,gamma=TRUE) > > > I understand that there is some concept called frequency which is creating > the problem, but can anyone help me on this please? I really need it urgent. > All my values corresponds to one single time point. > > -- > View this message in context: > http://r.789695.n4.nabble.com/Holt-Winters-in-R-Help-needed-tp4632816.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@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. ______________________________________________ R-help@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.
