On Aug 9, 2010, at 7:51 AM, moleps wrote:
Dear all,
I´m having trouble getting a list of regression variables back into
a dataframe.
mydf <- data.frame(x1=rnorm(100), x2=rnorm(100), x3=rnorm(100))
mydf$fac<-factor(sample((0:2),replace=T,100))
mydf$y<- mydf$x1+0.01+mydf$x2*3-mydf$x3*19+rnorm(100)
dlply(mydf,.(fac),function(df) lm(y~x1+x2+x3,data=df))->dl
here I´d like to use
ldply(dl,coef(summary)) or something similar but I cant figure it
out...
dfdl <- ldply(dl, function(x) coef(summary(x)) )
Doesn't create a grouping variable, so:
dfdl$group=rep(0:2, each=4)
David Winsemius, MD
West Hartford, CT
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