On Mon, 29 Aug 2011, Dieter Menne wrote:
Gang Chen-4 wrote:
However, my problem is that the file generated
from a graph of fixed size is too large (in the order of 10MB) because of
many data points in multiple scatterplots. Any suggestions?
Generate pdf, open and save it in Adobe Acrobat which does a compression
when the setting are correct.
*If* compression is enough, pdf() in R-devel does it, as does
cairo_pdf() in current R. And there are other ways than Acrobat to
compress/compact a PDF file: see ?tools::compactPDF and the 'Writing
R Extensions' manual.
However, compression will not make that much of a difference (maybe a
factor of 3), and the real problem seems to be the inappropriate plot.
If you really need a plot with hundreds of thousands of points (or
more), use a format like PNG -- but there are better ways to display
such plots for most statistical purposes. E.g. image and contour
plots of densities, hexplots, density-dependent thinning ....
--
Brian D. Ripley, rip...@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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