Try something like: plot(..., xaxt = "n", ...) axis(side = 1, at = 1:3) See ?axis for details on axis(). Emmanuel Paradis At 12:58 06/02/02 +0100, you wrote: >>>> Hello, I would like plot a vector and want to specify the Xticks which will be displayed. Is it possible ? For example, suppose that x is a vector of length 3. I just want the Xticks (and the corresponding labels) for 1 2 and 3 to be displayed ( and not 1, 1.5, 2,2.5, ....) . Thanks -- -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- Olivier MARTIN PhD student phone: (33) 04 76 61 53 55 Projet IS2 06 08 67 93 42 INRIA Rhone-Alpes fax : (33) 04 76 61 54 77 655, Av. de l'Europe Montbonnot e-mail:olivier.martin@inrialpes.fr 38334 Saint Ismier cedex -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- 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@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._