On 13-Mar-08 22:56:16, Alfonso Pérez wrote: > Hello, my name is Alfonso. My data are 0 and 1 values in > the y axis and fish length in the x axis. I'm trying to get > a graph where it could be fitted a logit curve to my data, > how could I get it?
Have a look at ?glm In particular (just going on your bare statement of your problem) let 'y' denote your vector or 0/1 results: x <- fishlength y <- glm(y ~ fishlength, family=binomial)$fit plot(x,y) lines(x,y) would be a start. However, I'm intrigued by what your variable y (more likely to be 1 as fishlength increases) might be. "Sexually mature"? There might be a better model for it than the logistic curve. Best wishes, Ted. -------------------------------------------------------------------- E-Mail: (Ted Harding) <[EMAIL PROTECTED]> Fax-to-email: +44 (0)870 094 0861 Date: 14-Mar-08 Time: 00:40:59 ------------------------------ 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.
