Hi R-users, I have a time series of residuals and I want to get the ACF (autocorrelation) values till lag = 12, along with the 12 upper/lower confidence limits. I understand that acf(residual) would give me the plot, but I will also need the actual values as an array etc. Plus, I'll have to extract the plot from R as well. Is there a way to achieve these two? Appreciate your help. Regards, Preetam [[alternative HTML version deleted]]
Michael Dewey
2016-Mar-06 10:09 UTC
[R] ACF values with confidence limits + Plot Extaction
According to the documentation acf returns what you want. It also says that it returns it invisibly if plot = TRUE which I imagine is what you are doing. So try res <- acf(insert_parameters_here, plot = FALSE) and then look at res On 06/03/2016 07:40, Preetam Pal wrote:> Hi R-users, > > I have a time series of residuals and I want to get the ACF > (autocorrelation) values till lag = 12, along with the 12 upper/lower > confidence limits. I understand that acf(residual) would give me the plot, > but I will also need the actual values as an array etc. Plus, I'll have to > extract the plot from R as well. Is there a way to achieve these two? > > Appreciate your help. > > Regards, > Preetam > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. >-- Michael http://www.dewey.myzen.co.uk/home.html
Thanks, Michael. Appreciate it. But suppose I go for the plot, how to extract it from R ... say, I want to save it as a .png file. Regards, Preetam On Sun, Mar 6, 2016 at 3:39 PM, Michael Dewey <lists at dewey.myzen.co.uk> wrote:> According to the documentation acf returns what you want. It also says > that it returns it invisibly if plot = TRUE which I imagine is what you are > doing. > > So try > > res <- acf(insert_parameters_here, plot = FALSE) > > and then look at res > > > > On 06/03/2016 07:40, Preetam Pal wrote: > >> Hi R-users, >> >> I have a time series of residuals and I want to get the ACF >> (autocorrelation) values till lag = 12, along with the 12 upper/lower >> confidence limits. I understand that acf(residual) would give me the plot, >> but I will also need the actual values as an array etc. Plus, I'll have to >> extract the plot from R as well. Is there a way to achieve these two? >> >> Appreciate your help. >> >> Regards, >> Preetam >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see >> 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. >> >> > -- > Michael > http://www.dewey.myzen.co.uk/home.html >-- Preetam Pal (+91)-9432212774 M-Stat 2nd Year, Room No. N-114 Statistics Division, C.V.Raman Hall Indian Statistical Institute, B.H.O.S. Kolkata. [[alternative HTML version deleted]]