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Message-ID: <4D2C0DF4.3090400@tum.de>
Date: 2011-01-11T07:59:48Z
From: Andreas Böck
Subject: design matrix for mixed effects model

Hi Wade,
For a model y ~ x1 + x2 + (x1 + x2 | id)
you get the random effects design matrix via

model.matrix(~ 0 + id + (x1 + x2):id)

Best,
Andi