Romain, Thanks for the code. It worked perfectly!
--- Romain Francois <[EMAIL PROTECTED]> wrote: > Le 11.08.2005 00:59, array chip a écrit : > > >Thanks for the suggestion! It works in a way that > the > >entire graph window is in the background color, is > >there a way to only have the plotting area (i.e. > the > >area within the axis box in the background color, > but > >leave the area outside the axes to be unchanged > >(white)? > > > >Thanks! > > > > > > > You need to learn how to use par('usr') and argument > add in image. > demo('graphics') is one way to learn or look at > graph 8 on r graph gallery > > R> image(matrix(c(1,2,NA, 1),2, 2)) > R> usr <- par('usr') > R> rect(usr[1], usr[3], usr[2], usr[4], > col="cornsilk") > R> image(matrix(c(1,2,NA, 1),2, 2),add=TRUE) > > Romain > > >--- Prof Brian Ripley <[EMAIL PROTECTED]> > wrote: > > > > > > > >>On Wed, 10 Aug 2005, someone needing to conceal > his > >>real name wrote: > >> > >> > >> > >>>Hi, I am using image() function to plot a matrix > >>> > >>> > >>which > >> > >> > >>>has some missing valuies (NA). It looks like, by > >>>default, missing values were drawn in white > color, > >>> > >>> > >>How > >> > >> > >>>can I change that into a different color, say a > >>> > >>> > >>gray > >> > >> > >>>color? I tried to use bg='gray' argument with no > >>> > >>> > >>luck. > >> > >> > >>>Anyone has a suggestion? > >>> > >>> > >>They are not drawn in white: in fact they are not > >>drawn at all, so the > >>current background (or if transparent, the canvas) > >>is what you see. > >> > >> > >> > >>>par(bg="yellow") > >>>image(matrix(c(1,2,NA, 1),2, 2)) > >>> > >>> > >>works, for example. > >> > >>-- > >>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 > >> > >> > > -- > visit the R Graph Gallery : > http://addictedtor.free.fr/graphiques > ~~~~~~~~ > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > ~~~~~~~~ > ~~~~~~ Romain FRANCOIS - > http://addictedtor.free.fr ~~~~~~ > ~~~~ Etudiant ISUP - CS3 - Industrie et > Services ~~~~ > ~~ http://www.isup.cicrp.jussieu.fr/ > ~~ > ~~~~ Stagiaire INRIA Futurs - Equipe > SELECT ~~~~ > ~~~~~~ > http://www.inria.fr/recherche/equipes/select.fr.html > ~~~~~~ > ~~~~~~~~ > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > ~~~~~~~~ > > ______________________________________________ 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