Thanks, it works nicely. In the meantime, I came across a similar
approach taken in the documentation of ggplot2, using a small sample
of the diamonds data.
Thanks all again,
baptiste
On 21 Oct 2007, at 12:25, Katharine Mullen wrote:
> I'm not aware of any existing function that does what y
Take a looks at the 'hexbin' package on BioConductor. It may give you
want you want.
On 10/21/07, baptiste Auguié <[EMAIL PROTECTED]> 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
I'm not aware of any existing function that does what you want, but you
could easily write a function to sample from x, y, z, and then pass the
sampled values to image. e.g.,
sam <- function(sx,sy,x,y,z){
xind<-seq(1,length(x),by=sx)
yind<-seq(1,length(y),by=sy)
samplex<-x[xind]
sampley<-y
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
smalle
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