I need help with three (apparently) basic things in R: 1. How to plot two series agains a third one?? (e.g. a Basic "Excel" graph with two variables) 2. When trying to run AR without constant I get the following (R.0.65.1 Windows):> data(lynx) > ar.s1_ar(lynx,order.max=1,demean=FALSE)Error: Object "nser" not found It only appears when demean=FALSE, for any data set, order or max) 3. AR function provides a summary such as lm (standard error, t, p-value, etc)?? Thank you in advance. Giovanni E. Romero Ph.D. student Department of Economics University of Toronto -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._