From Martin Maechler <maechler@stat.math.ethz.ch>  Thu Dec 18 08:10:54 1997
From: Martin Maechler <maechler@stat.math.ethz.ch> (Martin Maechler)
Date: Thu, 18 Dec 1997 09:10:54 +0100
Subject: model.matrix(.) and all that
Message-ID: <199712180810.JAA02547@sophie.ethz.ch>

Maybe just a minor thing,
but since we are aiming for  S compatibility, here :

       R> x_ 1:5
       R> model.matrix(x ~ x)
       Error: length of namelist must equal dims

whereas in  S,

	model.matrix(x ~ x)  ===  model.matrix(x ~ 1)
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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model.matrix(.) and all that
Martin Maechler