Pedro,
Did you try?
tetrachoric varlist
matrix list r(Rho)
(where varlist is the list of variable that you want)
and you got
matrix r(Rho) not found
r(111);
If that, you have to get an error somewhere...
update your Stata and type -return list- AFTER
-tetrachoric- command. You should see a list of
available matrices.
Rodrigo.
----- Original Message -----
From: "prneiva" <[email protected]>
To: <[email protected]>
Sent: Wednesday, November 15, 2006 6:00 AM
Subject: st: tetrachoric correlation
Thanks Austin, Maarten and Daniel. However, I am still having difficulties.
When I write matrix list r(Rho), the answer is matrix r(Rho) not found.
When I use the following procedure:
matrix C = r(Rho)
local n = r(N)
factormat C, n(`n')
the answer is: matrix C has missing values.
I don�t know what is happening, since the codebook shows that there is no
missing values.
Thank you
Pedro
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