annie Zhang wrote: > > Hi, Milton, > > Thank you for the reply. I tried, but it seems the problem is the column > name of the test data is not the same as the column name of the training > data. I didn't give the column name, the system seemed do. How to chang > here? > > Annie > > On Fri, Aug 7, 2009 at 7:52 PM, milton ruser <milton.ru...@gmail.com> > wrote: > >> 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. > >
See: ?colnames Alain ----- -------------------------------------------------------------------- Dr. Alain F. Zuur First author of: 1. Analysing Ecological Data (2007). Zuur, AF, Ieno, EN and Smith, GM. Springer. 680 p. 2. Mixed effects models and extensions in ecology with R. (2009). Zuur, AF, Ieno, EN, Walker, N, Saveliev, AA, and Smith, GM. Springer. 3. A Beginner's Guide to R (2009). Zuur, AF, Ieno, EN, Meesters, EHWG. Springer Statistical consultancy, courses, data analysis and software Highland Statistics Ltd. 6 Laverock road UK - AB41 6FN Newburgh Email: highs...@highstat.com URL: www.highstat.com -- View this message in context: http://www.nabble.com/generalized-linear-models-tp24873759p24885065.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.