[R] Setting constraints in the glm package

[David Smith]

Hi,

I would like to set a constraint on the fixed effect estimates in a GLM
model, such as b1=b2. Is this possible in the glm package? Similarly I would
like to set some to equal zero too. I have tried searching the information
with this package, but I can't find anything for this.

Thanks in advance for any help!

David
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