I expect the frequency to be set to what I set it at and the window to return all of the data in the window from the original time series. The error is not because it is prime. I can generate a time series with just 52 values (or 10) and it still occurs. I am building these objects for use with the 'forecast' packages and one of the methods 'ets' cannot handle a frequency above 24 so I set it (or try to) to 1. Will 'window' take z zoo or xts object? Can I convert from zoo or xts to ts?
-----Original Message----- From: R. Michael Weylandt [mailto:michael.weyla...@gmail.com] Sent: Tuesday, November 08, 2011 2:28 PM To: Kevin Burton Cc: r-help@r-project.org Subject: Re: [R] window? I'm not entirely sure that your request makes sense: what do you expect the frequency to be? It makes sense to me as is...Might your troubles be because 53 is prime? More generally, most people don't like working with the raw ts class and prefer the zoo or xts packages because they are much more pleasant for most time series work. You might want to take a look into those. Michael On Tue, Nov 8, 2011 at 3:18 PM, Kevin Burton <rkevinbur...@charter.net> wrote: > This doesn't seem to work: > > > >> d <- rnorm(2*53) > >> ds <- ts(d, frequency=53, start=c(2000,10)) > >> dswin <- window(ds, start=c(2001,1), end=c(2001,10), frequency=1) > >> dswin > > Time Series: > > Start = 2001 > > End = 2001 > > Frequency = 1 > > [1] 1.779409 > > > >> dswin <- window(ds, start=c(2001,1), end=c(2001,10)) > >> dswin > > Time Series: > > Start = c(2001, 1) > > End = c(2001, 10) > > Frequency = 53 > > [1] 1.7794090 0.6916779 -0.6641813 -0.7426889 -0.5584049 -0.2312959 > > [7] -0.0183454 -1.0026301 0.4534920 0.6058198 > >> > > > > The problem is that when the frequency is specified only one value > shows up in the window. When no frequency is specified I get all 10 > values but now the time series has a frequency that I don't want. > > > > Comments? > > > > Kevin > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > 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.
