Hi Phil,
Can you please check the version of systemfit running in your machine
? We have version 1.0-2 installed in our system.
Thanks,
Ferdi
Phil Jones wrote:
Hi all:
I'm having some trouble estimating a seemingly unrelated regression
(sur) model in Zelig. I get the same error message when I run my model
with my data *and* when I run the model in the Zelig help files (p523
of the manual), which suggests it might be a more general problem than
just my implementation.
Here's the code I ran (from the help files):
data(grunfeld)
formula <- list(mu1 = Ige ~ Fge + Cge, mu2 = Iw ~ Fw + Cw)
z.out <- zelig(formula = formula, model = "sur", data = grunfeld)
And here's the error message I get:
Error in systemfit(data = data, eqns = formula, method = method, inst
= inst, :
argument "formula" is missing, with no default
I don't think it's a naming problem -- the error persists even if I
specify that "eqns=formula", for example. I have the latest version of
Zelig, too. Does anyone have any idea what might be going wrong?
Thanks, Phil
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