On Tue, 20 Nov 2007, S Ellison wrote: > Also check the asp= parameter in plot.default and plot.window; this sets > the aspect ratio so that 1 unit in x is the same physicla length as 1 > unit in y. I don;t know whether it is respeced by your particular > biplot, though.
That's not how biplot.default() does it: rather it always plots a square plot within the device window with axes it manages itself and which do ensure that the scales are the same in both directions. I don't understand the request: the two quantities plotted on a conventional biplot are dimensionally different, so why would one want them to have the same scale? >>>> Bernardo Rangel Tura <[EMAIL PROTECTED]> 20/11/2007 10:51:12 >>>> > > On Mon, 2007-11-19 at 13:51 -0500, Weiwei Shi wrote: >> Hi, >> >> I am wondering how to draw biplot with the same scales on both > plots? >> For example, if the two plots have much different scales, generally >> the two x-y's are scaled so that the two plots are sitting in the >> center automatically. How to disable this? >> >> Thanks > > Hi WeiWei > > To solve your problem you must use the options xlim, ylim in your > biplot > > > par(mfrow=c(2,1)) > biplot(...,xlim=c(minimun,maximun),ylim=c(minimun,maximun),...) > biplot(...,xlim=c(minimun,maximun),ylim=c(minimun,maximun),...) Hmm: that is two biplots, each two superimposed plots. -- Brian D. Ripley, [EMAIL PROTECTED] 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, UK Fax: +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.
