[R] How does max.lag work? Let's say I have some data DIFF, then I do > a <- acf(DIFF, lag.max=2) > a$acf , , 1            [,1] [1,]  1.0000000 [2,] -0.2085724 [3,] -0.1597789 > a <- acf(DIFF) > a$acf , , 1              [,1]  [1,]  1.00000000  [2,] -0.20857236  [3,] -0.15977892 How come they are different? I thought the max.lag just controls how many lag to compute?  --  View this message in context: http://www.nabble.com/How-does-max.lag-work--tf3607611.html#a10079456 Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@stat.math.ethz.ch 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.