[R] Colours in R, was: deldir package - voronoi

[Wolfgang Huber]

Dear Rolf and Binabina

perhaps this is of use to some:

Colour for Presentation Graphics. Ross Ihaka.
www.stat.auckland.ac.nz/~ihaka/colour/color.pdf

Choosing Color Palettes for Statistical Graphics
Achim Zeileis and Kurt Hornik.
eeyore.ucdavis.edu/stat250/epub-wu-01_abd.pdf

  Best wishes
	Wolfgang

------------------------------------------------------------------
Wolfgang Huber  EBI/EMBL  Cambridge UK  http://www.ebi.ac.uk/huber


Turner ha scritto:
> On 12/08/2007, at 1:22 PM, zubin wrote:
> 
>> Hello!
>>
>> I am using the deldir package to visualize my data, pretty neat.
>> However, i need to fill the colors using polycol =, fill with colors
>> like a heatmap - more of a gradient fill.   The only colors i get are
>> very blocky - how do i assign the correct colors for a gradient,  
>> even a
>> grayscale?  i tried the chart of R colors, using 200 numbers for
>> grayscale but not getting them.  The polycol = colors the cells in the
>> tesselation with the value a specific vector for color.
> 
> 	<snip>
> 
> I'm sorry, but I can't help here.  I've been struggling with colors,  
> in a different
> context, recently myself, and I'm unclear as to how they work.  There  
> are a bunch
> of functions --- palette(), colorRamp(), colorRampPalette() that  
> probably relate
> to what you want to do, but I'm not sure just *how* they relate.
> 
> With a bit of luck, someone cleverer than I will come to your rescue.
> 
> 				cheers,
> 
> 					Rolf Turner
> 
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