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monthjanuary
2010 Mar 02
2
Strange behavior with poisosn and glm
Hi,
I'm just learning about poison links for the glm function.
One of the data sets I'm playing with has several of the variables as
factors (i.e. month, group, etc.)
When I call the glm function with a formula that has a factor variable,
R automatically converts the variable to a series of variables with
unique names and binary values.
For example, with this pseudo data:
y