[R] Size of R user base
Prof Brian Ripley
ripley at stats.ox.ac.uk
Mon Apr 19 23:27:25 CEST 2004
On Mon, 19 Apr 2004, Kevin S. Van Horn wrote:
> 2. At least one R book has achieved sales of just over 5,000 copies. (I
> could not find sales figures for other R books, as it appears that
> publishers are closed-mouthed about such figures. And no, I can't
> reveal which particular book this was, so don't ask.)
Some of us know quite accurately, though.
> Conclusion: Very few books sell to more than 12% of the population of
> potential buyers, and most books have a far lower penetration -- 1% or
Where did you get that 12% from?
> less is not uncommon. A 12% penetration for the book in question
> implies 42,000 R users; a more reasonable 5% penetration implies 100,000
> users. A low 1% penetration implies 500,000 users.
One S book has sold half your number of S-PLUS users, although some sales
are known to be to R users.
I have big problems with the definition. What is an `R user'? Someone
who has ever used R, even for a one-hour practical class? Someone who has
used R in the last 3 months? Even given a definition, I would not be able
to give you an accurate answer for our site, for either S-PLUS or R.
(There are machines with each installed that I strongly suspect are
Brian D. Ripley, ripley at 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
More information about the R-help