[R] image() with color key?

[Sean Davis]

Have you looked at the code for the heatmap and heatmap.2 (gregmisc 
package)?  Also, it seems you might be able to do it with grid 
graphics?  Finally, I think there is a colorbar command in the marray 
package available at http://www.bioconductor.org that generated color 
bars for image plots.  A combo of image and colorbar (?maColorBar) in 
grid or something like that may work.

Perhaps the simplest solution would be to use heatmap or heatmap.2 
directly with dendrogram='none'.

Hope this helps.

Sean

On Sep 3, 2004, at 4:20 PM, Berton Gunter wrote:

> In some applications, e.g., visualizing the values of the wells in a 
> 96 well
> (8 x 12) assay plate, the matrix of results is truly discrete and you 
> want
> to visualize it that way. image() does this, but not filled.contour() 
> AFAIK.
> If that's correct, the only way I know how to do it is to overlay two 
> plots
> (par(new=FALSE)),one for the data and the other for the legend. This is
> certainly not trivial, but it's not impossibly hard, either.
>
> I hope I'm wrong on this, though, as I'd welcome an easier way, too.
>
> -- Bert Gunter
> Genentech Non-Clinical Statistics
> South San Francisco, CA
>
> "The business of the statistician is to catalyze the scientific 
> learning
> process."  - George E. P. Box
>
>> Does filled.contour() give you what you want?
>>
>> Deepayan
>>
>> ______________________________________________
>> R-help at 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
>>
>
> ______________________________________________
> R-help at 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