[R] background colors in image()

[array chip]

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!

--- Prof Brian Ripley <ripley at stats.ox.ac.uk> 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,                 
> ripley at stats.ox.ac.uk
> 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
>