From Kurt.Hornik@ci.tuwien.ac.at  Wed Aug 13 08:54:31 1997
From: Kurt.Hornik@ci.tuwien.ac.at (Kurt Hornik)
Date: Wed, 13 Aug 1997 09:54:31 +0200
Subject: R-alpha: frame tools
In-Reply-To: <x2bu34eq85.fsf@biostat.ku.dk>
References: <199708111336.PAA00447@aragorn.ci.tuwien.ac.at>
 <x2bu34eq85.fsf@biostat.ku.dk>
Message-ID: <199708130754.JAA01185@aragorn.ci.tuwien.ac.at>

>>>>> Peter Dalgaard BSA writes:

> Kurt Hornik <hornik@ci.tuwien.ac.at> writes:
>> 
>> Btw, what happened to Peter's frame tools?   Is there a new version?
>> Are there plans to include them in the distribution?

> In the cooler for the time being. I did a little poking around some
> weeks ago, planning to change the syntax slightly so that there would
> be two functions, accessed as generic methods:

> subset.data.frame(fr,...,where)
> transform.data.frame(fr,...)

> e.g.,

> subset(data,visit1:visit5,where=(treat=="placebo"))
> transform(data,log.creatin=log(creatin))

> I.e. subset now combines the old select.frame and subset.frame
> mechanisms.

Sounds very nice.

> I also spent a litle while pondering whether the method for
> substituting names in an object of mode "call" could be generalized
> somehow, but decided that it was probably too difficult to get it
> right.

> Then the close-xterm bug zapped the .RData in the directory where I
> had been experimenting... Actually, I hadn't done all that much,
> mainly terminology cleanup, and what was lost should be easily
> recreated.

(Maybe run R from within Emacs?)

> What's really keeping me is that I've decided to try using R for our
> course in basic statistics for medical researchers, so now I need to
> focus on making sure things work that I absolutely *need*, and write
> various tutorials and missing functions (anyone have logrank.test and
> kaplan.meier.plot? Working with the Windows version, that is!).

Yes, that would be nice, too.  I remember you asked for that some time
ago ...

What's also needed is something to produce and plot empirical
distribution functions.  I thought I could write something for my
Biostat course last semester, but it never happened ...

Best,
-k
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R-alpha: frame tools
Kurt Hornik