Note, however, that one can get R^2 < 0, e.g., with a straight line through the origin. If "nlme" does not automatically report R^2, this may be why.
Hope this helps. Spencer Graves
[EMAIL PROTECTED] wrote:
Dear all
I'm not sure is this question has much sense, but I'm working with nonlinear models using the nlme library (gnls fit for different groups) and I'm wondering if I can get the values of R-squared for each fit. I'll appreciate any comment.
Thanks in advance
C. Mora
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