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Hi, what es the parameter set.fit in function predict.lm, is set.fit True then i need the standard error How i cant calculate it?. It is the different what? i see the code of predict.lm How i cant see the matemathics formula for the calculation of standard error.

Dear All,   I am using the following model equation:   k*(lambertW_base(b=0,((a)/k)*exp(((a)-z*(t-t0))/k)))   I would like to run this through OpenBUGS, but it does not recognize the lambert function. Would you have any thoughts on how to re-vrite this equation matemathically so that it could be run on OpenBUGS?   apreciate the help,   Sincerely,   Andrs [[alternative HTML version deleted]]