R help - Nov 2006 - (no subject)

Dear R users,

Please excuse my inexperience.  I am trying to contrain the coefficients of
my linear regression to equal one when using the <-lm(...) command.  I've
searched "help(glm)" "help(model.offset)" etc. but I am
unable to figure out
where to put this constraint.  Your help would be greatly apprciated.

Thanks.

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Hi, 

The plot function not produces graphics in linux.

The msg:
Error in X11(): it was not possible to find no source
X11 Verifity if the way of sources is correct.

Any ideas? 

Thanks, Ricardo

put the constrained predictor in the model offset ('offset' argument in
'lm').
i.e.:
> set.seed(10)
> X <- matrix(rnorm(20), 10, 2)
> y <- X %*% c(1,2) + rnorm(10)
> coef(lm(y ~ X[,2], offset=X[,1]))
(Intercept)      X[, 2]
 -0.8009112   1.6968198
> coef(lm(I(y-X[,1]) ~ X[,2]))
(Intercept)      X[, 2]
 -0.8009112   1.6968198

Antonio.

2006/11/1, John Gauss <lebesgue.math a gmail.com>:
> Dear R users,
>
> Please excuse my inexperience.  I am trying to contrain the coefficients of
> my linear regression to equal one when using the <-lm(...) command. 
I've
> searched "help(glm)" "help(model.offset)" etc. but I am
unable to figure out
> where to put this constraint.  Your help would be greatly apprciated.
>
> Thanks.
>
>         [[alternative HTML version deleted]]
>
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