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RE: Spam: st: Matrix query


From   "Rodrigo Alfaro A." <ralfaro@bcentral.cl>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: Spam: st: Matrix query
Date   Thu, 4 Sep 2008 14:35:01 -0400

///

What about
matrix filter2= b0\b1 


-----Mensaje original-----
De: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] En nombre de Bob
Fitzgerald
Enviado el: Jueves, 04 de Septiembre de 2008 02:24 p.m.
Para: statalist@hsphsun2.harvard.edu
Asunto: Spam: st: Matrix query

I have the following code which does not work and I'm stumped. 
Suggestions welcome.
Female is a dummy variable coded 0=male, 1=female.

****

levelsof female, local(name);
foreach l of local name {;

di "`: label (female) `l''";
ttest  sri_lexile_scores_1 =  sri_last_lexile_score if female==`l' &
filter2==1; mat b`l' = r(mu_1), r(mu_2), r(N_1), r(N_2), r(t) ,r(p);
matrix list b`l'; };

matrix filter2= b0\b1\;
matrix colnames filter2 = mean1st meanlast nfirst nlast t prob; matrix
list filter2; mat2txt , matrix(filter2) saving(table 12rev paired ttests
filter2 for
excel.txt) append;
*****
The program runs the ttests, shows the contents of matrices b0 and b1 at
each step through the foreach loop, but fails with the following error
message:

. matrix filter2= b0\b1\;
b1\ not found
r(111);

yet b1 is created and the contents reflect the results of the ttest.

Thanks for any advice.

BOb

--
Robert Fitzgerald
Senior Research Associate
MPR Associates, Inc.
2150 Shattuck Ave. #800
Berkeley,CA 94702
(510) 849-4942

www.mprinc.com
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