I hope you will forgive a serious comment on this thread, but the new "sos" package makes "greping through the headers" shockingly easy. It returns the 'RSiteSearch( ___ , "function")' information in a data.frame of class "findFn" sorted to put the package with the most matches first. Duncan Murdoch wrote a "???" alias for this "findFn" function. Union and intersection operators are defined for "findFn"objects. The "findFn2xls" function writes an Excel file with three sheets giving an extended package summary, the matches (including the URLs), and the call. An article on this is scheduled to appear in the next issue of "R Journal" and is available now via vignette('sos').

This "sos" package is not as good as greping Ripley's frontal lobe, but it makes it quite easy to do a literature search of all contributed R packages.

     Spencer


Jeffrey Horner wrote:
Simon Urbanek wrote on 10/01/2009 11:51 AM:
[...]
I suspect you like reinventing the wheel ;). Your NewInteger is part of the R API and is called ScalarInteger(). When you need something, chances are that R has it already, so it's worth greping through the headers (and sometimes even through the main sources).

I am reminded of what Robert Gentleman said at DSC 2005 during the R/S round-chair discussion: "Brian Ripley is the only one I know who keeps R in his frontal lobe."

I can only aspire to such greatness, Simon.

Jeff

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