Re: [Rd] CRAN Server download statistics (Was: R Usage Statistics)

From: spencerg <>
Date: Mon, 23 Nov 2009 18:09:01 -0600

Beyond what Gabor said, I might download a package that uses "zoo", then use "zoo" directly in other contexts without ever downloading it directly. Total downloads would capture that; top level downloads would not. The flip side is that a package that requires "zoo" may only use it for features that I don't use. This would support the use of top level downloads over total downloads. Spencer

Gabor Grothendieck wrote:
> On Mon, Nov 23, 2009 at 3:51 PM, Fellows, Ian <> wrote:
>> 6. Regarding package dependancies, I was thinking about also counting the number of top level downloads, as approximated
>> by the number of downloads where a reverse dependancy was not downloaded in the next 5 min by the same IP.
> Top level downloads discriminates against infrastructure packages,
> i.e. packages that are not necessarily directly used by users or even
> downloaded directly by users. It can make it seem as if a package
> that is widely used, but not directly by users, is barely used at all
> so total downloads seems a better metric of popularity than top level
> downloads.
> I can't find it just now but remember reading a post on another list,
> or maybe it was his blog, by the author of certain software (not
> related to R) that was fundamental to Ruby on Rails but as
> infrastructure would not be directly observed by the user yet Ruby on
> Rails got all the credit and his key contribution got almost none
> despite the fact that Ruby on Rails likely would have never achieved
> its current high level of popularity without his contribution.
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