[R] legend in image()

[Roger Peng]

Check out `image.plot' in the `fields' package.  Also, `filled.contour'
may do what you want (and seems to produce nicer pictures).

-roger
_______________________________
UCLA Department of Statistics
rpeng at stat.ucla.edu
http://www.stat.ucla.edu/~rpeng

On Tue, 17 Sep 2002, Sam McClatchie wrote:

> System info:
> Linux slackware
> R Version 1.5.1  (2002-06-17)
> ESS 5.1.21
> Emacs 21.2.1
> -------------------
> Colleagues
> 
> Is there a way to add a legend to an image plot? I don't see any 
> reference to legends in the documentation (so I suppose the answer is 
> no?). Although the documentation says image takes plot() parameters, it 
> isn't clear to me how the usual use of legend in a plot command would go 
> for image(). Perhaps you need to specify 'breaks' and then use something 
> like:
> 
> legend(x,y, breaks, c('label1', label2'...))
> ?
> 
> Here is my function call at the moment without a legend:
> 
>   image(time.h, z, -log10(t5),
>          xlab='hours', ylab='depth m',
>          col=rainbow(20),
>          main = 'Chatham Rise DVM',
>          yaxt='n', zlim=c(2,6.5), cex=0.5)
> 
> Thanks in advance,
> 
> Sam
> 
> -- 
> Sam McClatchie, Research scientist (fisheries acoustics))))))))))
> NIWA (National Institute of Water & Atmospheric Research Ltd)
> PO Box 14 901, Kilbirnie, Wellington, New Zealand
> s.mcclatchie at niwa.cri.nz
> Research home page <http://www.smcc.150m.com/>
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