[R] Meaning of lag 0.2, 0.4,... ?
Please see that correlogram for a arbitrary time series : acf(zooreg(rnorm(39), start=as.yearmon(2008-01-01), frequency=12)) What is the meaning of lag 0.2, 0.4, in the plot? Those should not be integers? Or I am missing something? Thanks -- View this message in context: http://n4.nabble.com/Meaning-of-lag-0-2-0-4-tp1765093p1765093.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.
Re: [R] Meaning of lag 0.2, 0.4,... ?
Hi Bogaso, You could try this to get integer x-axis values: library(zoo) z = zooreg(rnorm(39), start=as.yearmon(2008-01-01), frequency=12) acf(ts(z,freq=1)) Steve Chen On 2010/4/8 下午 03:32, Bogaso wrote: Please see that correlogram for a arbitrary time series : acf(zooreg(rnorm(39), start=as.yearmon(2008-01-01), frequency=12)) What is the meaning of lag 0.2, 0.4, in the plot? Those should not be integers? Or I am missing something? Thanks __ 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.
Re: [R] Meaning of lag 0.2, 0.4,... ?
On Wed, 7 Apr 2010, Bogaso wrote: Please see that correlogram for a arbitrary time series : library(zoo) ## you example does not work without it! acf(zooreg(rnorm(39), start=as.yearmon(2008-01-01), frequency=12)) What is the meaning of lag 0.2, 0.4, in the plot? Those should not be integers? Or I am missing something? You are. They are in years: you told R that the series was monthly with a time unit of years. Thanks -- View this message in context: http://n4.nabble.com/Meaning-of-lag-0-2-0-4-tp1765093p1765093.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. ^^^ -- Brian D. Ripley, rip...@stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UKFax: +44 1865 272595 __ 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.
