[R] step halving factor reduced below minimum

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. Mei

Re: [R] step halving factor reduced below minimum

[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