Hello, I wonder if image(t(x)[ncol(x):1, ]) can do the job correct!
perhaps this does the job better: image(t(x)[,nrow(x):1]) Björn From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk> Date: Fri 27 Aug 2004 - 06:43:50 EST On Thu, 26 Aug 2004, Glynn, Earl wrote: > Start with: > > > x <- c(1:7,1) > > dim(x) <- c(2,4) > > x > [,1] [,2] [,3] [,4] > [1,] 1 3 5 7 > [2,] 2 4 6 1 > > 2 Rows of 4 Columns. Upper-left and lower-right elements of the matrix > are the same. > > All to this point makes good sense. It's pure convention: see below. > > image(x) > > However, this image shows 2 columns of 4 rows. The lower-left and > upper-right elements are the same. This does not make sense to me. > Did I miss some simple parameter to "fix" all of this naturally? Why > would the numeric matrix of "x" and the image of "x" have such a > different geometry? Did you try reading the help for image? You don't seem to understand it if you actually did. It seems you are looking for image(t(x)[ncol(x):1, ]) Easy! Mathematical conventions are just that, conventions. They differ by field of mathematics. Don't ask us why matrix rows are numbered down but graphs are numbered up the y axis, nor why x comes before y but row before column. But the matrix layout has always seemed illogical to me. -- 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@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 "Jetzt Handykosten senken mit klarmobil - 15 Ct./Min.! Hier klicken" www.klarmobil.de/index.html?pid=73025 ______________________________________________ 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