[R] glm predict on new data

From: dirknbr <dirknbr_at_gmail.com>
Date: Wed, 06 Apr 2011 14:17:05 -0700 (PDT)

I am aware this has been asked before but I could not find a resolution.

I am doing a logit

lg <- glm(y[1:200] ~ x[1:200,1],family=binomial)

Then I want to predict a new set

pred <- predict(lg,x[201:250,1],type="response")

But I get varying error messages or warnings about the different number of rows. I have tried data/newdata and also to wrap in data.frame() but cannot get to work.

Help would be appreciated.


View this message in context: http://r.789695.n4.nabble.com/glm-predict-on-new-data-tp3431855p3431855.html
Sent from the R help mailing list archive at Nabble.com.

R-help_at_r-project.org mailing list
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Received on Wed 06 Apr 2011 - 22:05:12 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Wed 06 Apr 2011 - 22:40:27 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive