I have a WLS regression with 1 dependent variable and 3 independent variables. I wish to constrain the predicted values (the fitted values) so that they are greater than zero (i.e. they are positive). I do not know how to impose this constraint in R. Please respond if you have any suggestions.
There are some previous postings about constraining the coefficients, but this won't accomplish what I am trying to do. The coefficients can be negative, just as long as the predicted values are positive. Thank you in advance for your time. Westley A. Ritz Analyst 215-641-2243 [EMAIL PROTECTED] TRC www.trchome.com
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