[R] equal spacing of the polygons in levelplot key (lattice)

[Dennis Murphy]

Hi:

Does this work?

# library('lattice')
levs <- as.vector(quantile(volcano,c(0,0.1,0.5,0.9,0.99,1)))
levelplot(volcano, at = levs,
            colorkey = list(labels = list(at = levs,
                                                   labels = levs) ))

HTH,
Dennis

On Tue, Nov 15, 2011 at 1:12 PM, Andy Bunn <Andy.Bunn at wwu.edu> wrote:
> Given the example:
> R> (levs <- quantile(volcano,c(0,0.1,0.5,0.9,0.99,1)))
>   0%  10%  50%  90%  99% 100%
>   94  100  124  170  189  195
> R> levelplot(volcano,at=levs)
>
> How can I make the key categorical with the size of the divisions equally spaced in the key? E.g., five equal size rectangles with labels at levs c(100,124,170,189,195)?
>
> Apologies if this is obvious.
>
> -A
>
> R> version
>                _
>  platform       i386-pc-mingw32
>  arch           i386
>  os             mingw32
>  system         i386, mingw32
>  status
>  major          2
>  minor          14.0
>  year           2011
>  month          10
>  day            31
>  svn rev        57496
>  language       R
>  version.string R version 2.14.0 (2011-10-31)
>
> ______________________________________________
> R-help at 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.
>