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

[Caimiao Wei]

Dear all,

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.

Caimiao
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