Dear all,
Consider the following:
library(MASS); data(HairEyeColor)
l1 <- loglm(~ 1+2+3, data=HairEyeColor)
myloglm <- function(){
nd <- HairEyeColor
v <- loglm(~ 1+2+3, data=nd)
return(v)
}
l2 <- myloglm()
Now, step(l1) works, whereas step(l2) does not, the problem being that data nd does
not exist outside myloglm. I was under the impression that objects from functions like
glm() and lm() "carried their data" with them, but that does not seem to be the case
for loglm(). Is there a reason for these different behaviours??
Thanks in advance
SÃren HÃjsgaard
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