Dear All,

 

I am trying to specify the following fixed effects model for lme:

y ~ constant1 - beta1*(x - beta2)

where y is the response, x is the independent variable, and the
operators above are real arithmetic operations of addition, subtraction,
and multiplication.  I realize that this model is just a
reparameterization of y=beta0+beta1*x, but I am using this
parameterization because I am specifically interested in confidence
bounds for beta2.

 

I have looked at the help, but the closest hint I find is the I()
function, and that does not seem to work this way.  

 

I confess that I am actually using S-plus, but there does not seem to be
a resource like this list for S-plus.

 

Any help would be greatly appreciated.

 

Kind regards,

Eric

 


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