[R] Retrieving response variable in the probit

Achim Zeileis Achim.Zeileis at uibk.ac.at
Mon May 2 11:14:09 CEST 2016

On Mon, 2 May 2016, Steven Yen wrote:

> Can anyone tell me how to retrieve the response (dependent) variable
> from a probit regression object (as much as model.matrix(obj)
> retrieves the data matrix). Below is a self-runnable set of codes.
> Thank you!
> library(sampleSelection)
> data<-read.csv("https://dl.dropboxusercontent.com/u/220037024/Yen/data/pta.csv")
> eq1<-d~sex+age+educ
> p1<-probit(eq1,data=data)
> summary(p1)
> attributes(p1)


recovers the (possibly transformed) data employed for fitting the model 


extracts the response variable from that model frame.

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