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st: RE: -xi- with multible variables
There is no problem in using -xi- with
multiple variables. The help file
As always, comment on what you tried
but didn't work for you is much easier if we
can see exactly what you typed.
If I wanted to lay down the kind of
artillery barrage of covariates you have in mind
here, I think I would resort to
producing the arguments for -xi-
with some macro manipulation.
Some other users have found -xi-
insufficiently flexible for their
needs. -xi3- and -desmat- appear
to be the main user-written alternatives.
A -findit- is recommeneded.
> Is there some way to use the -xi- command with multiple
> variables? This
> is the context of a three level nested logit model with around 10
> independent variables. I need to create interactions for all of the
> I have a categorical variable that I want to interact with a number of
> continuous variables, is there a Stata command to do this? Xi only
> seems to work with one variable.
> Let variable categorical_1-categorical_3 have 5 levels each.
> Let var1-var8 be continuous variables that I want to interact
> them with.
> Is there some way to interact categorical_1*(var1-var8),
> categorical_2*(var1-var8), and categorical_3*(var1-var8)
> easily? I know
> I can change the prefix, but this still requires 24 different prefixes
> and creates a number of redundant dummies. Surely this must
> be a common task and I'm overlooking something.
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