[EMAIL PROTECTED] writes: > Dear Splus and R users: > I have a problem in fitting a NLME model, the error message is: > > "step halving factor reduced below minimum in PNLS step" > > What does it mean and how to fix the problem, could anyone help me > about it? > > Any suggestion/help would be greatly appreciated.
Turn on the verbose option (i.e. add verbose = TRUE to the nlme call) to see what is happening to the parameter estimates during the iterations. That should give you a clue as to why the estimation algorithm is not converging. ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
