From Andreas.Weingessel@ci.tuwien.ac.at  Tue Feb  3 08:10:42 1998
From: Andreas.Weingessel@ci.tuwien.ac.at (Andreas Weingessel)
Date: Tue, 3 Feb 1998 09:10:42 +0100
Subject: linear models
Message-ID: <199802030810.JAA12226@elendil.ci.tuwien.ac.at>


How can I use linear model regression for more than 1 dependent (response=
)
variable?

In S it is possible to do something like
S> x<-matrix(rnorm(300),100,3)
S> lm(x[,1:2]~x[,3])
to get

----------------------------------------------------------------------

Response: Y1=20
Call:
lm(formula =3D x[, 1:2] ~ x[, 3])

Coefficients:
 (Intercept)     x[, 3]=20
  0.02778965 -0.1081179

Degrees of freedom: 100 total; 98 residual
Residual standard error: 0.8294969=20

Response: Y2=20
Call:
lm(formula =3D x[, 1:2] ~ x[, 3])

Coefficients:
 (Intercept)     x[, 3]=20
  0.08045632 -0.1815675

Degrees of freedom: 100 total; 98 residual
Residual standard error: 1.081359=20

----------------------------------------------------------------------

This is not possible in R:

R> x<-matrix(rnorm(300),100,3)
R> lm(x[,1:2]~x[,3])
Error: dimnames: number of dimensions must equal number of names


	Andreas

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*                          Andreas Weingessel                          *
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linear models
Andreas Weingessel