There is a graphical parameter that controls whether a plot is square or takes up the maximum amount of room (rectangle), see ?par and look at the entry for pty.
It is possible that you set pty='s' or it may be that the plot method sets it, without us knowing what type of object Date and Test01$Date are we don't know which method is creating your plot and cannot be much more help (that is meant as a subtle hint to provide the information requested in the footer of every post and the posting guide). Some methods may set pty='s' as default but have an option to change it. -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of Stephen Liu > Sent: Thursday, August 26, 2010 8:45 AM > To: r-help@r-project.org > Subject: [R] About plot graphs > > Hi folks, > > Following command prints 2 graphs side-by-side:- > layout(matrix(1:2, nrow=1)) > plot(Date,Input_No.) > plot(Test01$Date, Test01$Input_No.) > > However each is a square graph I need a rectangular layout. Pls advise > how to > make it. TIA > > B.R. > satimis > > > > > ______________________________________________ > 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. ______________________________________________ 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.