[BioC] how to reduce the file size of scatter plot matrix

[James Wettenhall]

Hi,

On Mon, 12 Jul 2004, Caimiao Wei wrote:
> I am trying to get the scatter plot matrix (function "pairs")
> and MVA plot (function "mva.pairs") of multiple affy chips.
> When I use postscript() or pdf() to save the graphs generated
> from 12 affy mouse chips using the "pairs" function, the size
> of the file is about 500 MB. I would appreciate any
> suggestions that can effectively reduces the size of these plots.

Have a look at the hexbin package (available from Bioconductor)
by Dan Carr, Nicholas Lewin-Koh and Martin Maechler.

It has a nice vignette, available in you R library directory :
hexbin/doc/hexagon_binning.pdf
OR
http://www.bioconductor.org/repository/devel/vignette/hexagon_binning.pdf

Regards,
James