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 in model.frame(formula, rownames, variables, varnames, extras, extranames, : variable lengths differ This is the data> data.tsJan Feb Mar Apr May Jun Jul Aug Sep 2001 1117001 1017287 1195142 1049729 1409147 1267002 1579907 1563127 1195597 2002 1228333 1062520 1080117 1171998 1383951 1141008 1604061 1446024 1276017 2003 1068221 1045052 1164273 1091765 1272330 1305676 Oct Nov Dec 2001 1290688 1104137 1027022 2002 1262232 1048522 1174157 2003 Do you know what is happening? Thank you Luis
How did you construct `data.ts'? Can you send me the file? best, David On 2003.09.03 15:57, Luis Miguel Almeida da Silva wrote:> 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 in model.frame(formula, rownames, variables, varnames, extras, > extranames, : > variable lengths differ > > This is the data > > > data.ts > Jan Feb Mar Apr May Jun Jul Aug > Sep > 2001 1117001 1017287 1195142 1049729 1409147 1267002 1579907 1563127 > 1195597 > 2002 1228333 1062520 1080117 1171998 1383951 1141008 1604061 1446024 > 1276017 > 2003 1068221 1045052 1164273 1091765 1272330 1305676 > > Oct Nov Dec > 2001 1290688 1104137 1027022 > 2002 1262232 1048522 1174157 > 2003 > > Do you know what is happening? > > Thank you > Luis > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > >
The data goes in attachment. I used ts to create data.ts data.ts<-ts(data=data,start=c(2001,1),frequency=12) -----Original Message----- From: David Meyer [mailto:david.meyer at ci.tuwien.ac.at] Sent: Wed 03/09/2003 17:21 To: Luis Miguel Almeida da Silva Cc: r-help at stat.math.ethz.ch Subject: Re: [R] problem with HoltWinters How did you construct `data.ts'? Can you send me the file? best, David On 2003.09.03 15:57, Luis Miguel Almeida da Silva wrote: > 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 in model.frame(formula, rownames, variables, varnames, extras, > extranames, : > variable lengths differ > > This is the data > > > data.ts > Jan Feb Mar Apr May Jun Jul Aug > Sep > 2001 1117001 1017287 1195142 1049729 1409147 1267002 1579907 1563127 > 1195597 > 2002 1228333 1062520 1080117 1171998 1383951 1141008 1604061 1446024 > 1276017 > 2003 1068221 1045052 1164273 1091765 1272330 1305676 > > Oct Nov Dec > 2001 1290688 1104137 1027022 > 2002 1262232 1048522 1174157 > 2003 > > Do you know what is happening? > > Thank you > Luis > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > > -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: data.txt Url: https://stat.ethz.ch/pipermail/r-help/attachments/20030903/9dfa9419/data.txt