Re: [R] Problem with ordered probit model in MASS

2007-01-25 Thread David Duffy
Justin Bem wrote: I got this message, while using the polr function in MASS Error in polr(EQ, don, subset = (cote != 0), method = probit, na.action = na.omit) : attempt for find suitable starting values failed how can I initialise starting values ? You might try running an

[R] Problem with ordered probit model in MASS

2007-01-24 Thread justin bem
Dear all, I got this message, while using the polr function in MASS EQ-as.formula(dep~fpta+tcdv+cdta+cmta+prcd+patc+lactifs+excta) Estim-polr(EQ,don, subset=(cote!=0),method=probit,na.action=na.omit) Error in polr(EQ, don, subset = (cote != 0), method = probit, na.action = na.omit) :

Re: [R] Problem with ordered probit model in MASS

2007-01-24 Thread Prof Brian Ripley
On Wed, 24 Jan 2007, justin bem wrote: (Again: this is a duplicate post.) Dear all, I got this message, while using the polr function in MASS EQ-as.formula(dep~fpta+tcdv+cdta+cmta+prcd+patc+lactifs+excta) Estim-polr(EQ,don, subset=(cote!=0),method=probit,na.action=na.omit) Error in

[R] Problem with ordered probit model in MASS

2007-01-23 Thread justin bem
Dear all, I got this message, while using the polr function in MASS EQ-as.formula(dep~fpta+tcdv+cdta+cmta+prcd+patc+lactifs+excta) Estim-polr(EQ,don, subset=(cote!=0),method=probit,na.action=na.omit) Error in polr(EQ, don, subset = (cote != 0), method = probit, na.action = na.omit) :