On 19-May-09 19:52:20, deanj2k wrote: > dlogl <- > -(n/theta)-sum((y/(theta)^2)*((1-exp(y/theta))/(1+exp(y/theta))) > > d2logl <- (n/theta^2) - > sum((-2y/theta^3)*(1-exp(y/theta))/(1+exp(y/theta))) > - sum(((2*y/theta^4)*exp(y/theta))/((1+exp(y/theta))^2)) > > returns the error message: > Error: unexpected symbol in: > "dlogl <- > -(n/theta)-sum((y/(theta)^2)*((1-exp(y/theta))/(1+exp(y/theta))) > d2logl" > > do you know what i have done wrong
The error message strongly suggests that the line beginning "d2logl <-" is being seen as a continuation of the preceding line. Counting parentheses, I find that you are 1 short of what is required to complete the expression in the line beginning "-(n/theta)". In that case, R will continue on to the next line seeking the completion, and will encounter "d2logl" non-syntactically. Ted. -------------------------------------------------------------------- E-Mail: (Ted Harding) <ted.hard...@manchester.ac.uk> Fax-to-email: +44 (0)870 094 0861 Date: 19-May-09 Time: 22:12:40 ------------------------------ XFMail ------------------------------ ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.