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)
model.frame(p1)
recovers the (possibly transformed) data employed for fitting the model
and
model.response(model.frame(p1))
extracts the response variable from that model frame.
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
