Ensure that the package sources are not unnecessarily large. ... As a general rule, doc directories should not exceed 5Mb, and where data directories need to be 10Mb or more, consideration should be given to a separate package containing just the data. (Similarly for external data directories, large jar files and other libraries that need to be installed.)
With 2800 packages on CRAN, overall size is becoming a concern and currently to install all of CRAN takes 4Gb. As the attached (I hope) graph shows, the 20 packages over 20Mb take a quarter, and those over 5Mb take half. (And this is after we have removed 100Mb from the largest installed package by re-compression, and archived the second largest, so Robin's package is currently the largest.) Some of the largest packages are data/jar packages, but there are 55 packages with 'doc' directories over 5Mb. To put that in perspective, PDFs of whole books with lots of figures (MASS, Paul's R Graphics) are well under 5Mb.
R CMD check in R-devel reports on large packages, and expect in future that submitted package sizes will be questioned more often.
There are lots of different reasons why doc directories are large, but the major ones are
- installing files that are unneeded, such as Rplots.pdf and .eps figures. - using PDF figures of images where PNG would be more appropriate. - including less than relevant material (such as how to install R, with screenshots!)There are several ways to reduce the sizes of PDFs with no loss in quality, e.g. Adobe Acrobat Standard/Pro.
-- 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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