[R] image 256 x 920 data points too slow

[jim holtman]

Take a looks at the 'hexbin' package on BioConductor.  It may give you
want you want.

On 10/21/07, baptiste Auguié <ba208 at exeter.ac.uk> wrote:
> Dear R gurus,
>
> I'm trying to visualize a matrix 256 x 920 using image(), but i find
> the display too slow (~ 1 minute –– admittedly, my iBook G4 isn't
> very fast). The aim is not to get a good resolution image, but rather
> have a quick look at the matrix. I couldn't find a way to plot a
> smaller set of points from my data in a sensible manner (basically, i
> want to decrease the resolution). Is there an easy option for this
> purpose in image(), or possibly the lattice equivalent?
>
> Minimal example:
>
> x<-c(1:256)
> y<-c(1:920)
> z<-x%*%t(y)
> image(x,y,z)
>
>
> Best regards,
>
> baptiste
>
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>


-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?