Re: [Rd] contr.sum() and contrast names

From: Milan Bouchet-Valat <>
Date: Tue, 30 Oct 2012 10:25:56 +0100

Le samedi 27 octobre 2012 à 10:44 -0400, John Fox a écrit :
> Hi Milan,
> Take a look at the contr.Sum() and contr.Treatment() functions in the
> car package.
Yeah, this is the kind of function I had in mind. Just that I think we should have an equivalent in the base packages.

> (I recall, BTW, the sometimes acrimonious previous discussion of this
> issue.)
I could not find this discussion, do you have any pointer?

Anyways, going deeper and deeper into the archives, I've found you made the same proposal almost exactly 10 years ago[1]! Oddly enough, it only prompted one reply at the time - has the rest of the discussion been removed from the archives because it was too rude? ;-) Should we reopen the debate now that some time has been spent without actions being taken on that front?


  1. mailing list Received on Tue 30 Oct 2012 - 09:29:46 GMT

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