Hi Annie, create a new data.frame with input variables having all predictors variables on it. after give a look at ?predict
best wishes milton On Fri, Aug 7, 2009 at 8:19 PM, annie Zhang <annie.zhang2...@gmail.com>wrote: > Hi, R users, > > I am trying to use glm to do logistic regression. I know generally when I > have two covariates, say x1 and x2, then I do > fit <- glm(y~x1+x2,famliy='binomial') > But now my covariates form a n*p matrix, say x, so actually each column is > a > covariate. So I think I should do > fit <- glm(y~x,family='binomial') > Then I need to predict new data. How should I write the newdata? I tried > several thing, all failed. The x in the fit is a matrix, but is a vector > for > the new data. > > Thank you, > Annie > > [[alternative HTML version deleted]] > > ______________________________________________ > 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<http://www.r-project.org/posting-guide.html> > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ 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.
