Hello Daniel,
I have the same problem than you : i use nls.profile to compute
confidence intervals of estimated parameters but it fails and stop...
I tried to increase alphamax value as Douglas suggested that it should
work but it's not...
Did you find a method to tell nls.profile to ignore errors and proceed
to the next parameter value ?
Thank you very much!
--
Thomas de Marchin
PhD Student
Laboratory of Bioenergetics
University of Liège, Institute of Botany (B.22-P.70)
Bld du Rectorat, 27
Sart Tilman, 4000 Liège, Belgium
Tel: +32 (0)4 366 38 08
http://www.biophoto.ulg.ac.be
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