[R] # of users of R

[Emmanuel Paradis]

At 17:51 21/06/00 +0200, Friedrich Leisch wrote:
>
>OK, we're statisticians so let's use some real data and not only
>guestimates ... in
>
>	http://www.ci.tuwien.ac.at/~leisch/cran-http.report/
>
>you find some usage statistics about the CRAN *master* site (with all
>traffic inside our domain removed). Beware that not every hit is a
>potential user as search engines (``crawlers'') heavily bias the log
>files. It's alo only data on our server, no cran.(ch|dk|uk|us|...) or
>statlib (with it's own mirrors). Also obviously all people using the
>version from their linux distribution are missing),
>
>But it's something to play with :-)
>
>Have fun,
>Fritz

Looking at the data for March 2000 (coinciding with the release of R
1.0.0), there were 1800 hits on /bin/windows, and 732 hits on /bin/linux. I
assume that ALL users of R on Linux visit /bin/linux (at least for
curiosity to check what binaries are available) even if they use the
sources (note that the same assumption must hold for Windows users).

So, 1800/732 estimates the ratio of the number of R users under Windows on
the number of R users under Linux. Taking Dirk's estimate of 107,000 R
users under Linux, I get 263,000 R users under Windows.

This still leaves open the issue of the number of users who just compile
from the sources under other OSs... perhaps a few tens of thousands??? This
would lead to ca.400,000 users of R.

Emmanuel Paradis
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