Date:         Thu, 10 Oct 1996 10:36:05 -0400
Reply-To:     "Mr. Jinping Shi" <shi@UMBC.EDU>
Sender:       "SAS(r) Discussion" <SAS-L@UGA.CC.UGA.EDU>
From:         "Mr. Jinping Shi" <shi@UMBC.EDU>
Organization: University of Maryland, Baltimore County
Subject:      Nonnegative Coefficients in PROC REG?

Greeting,
 
   I want to fit linear regression
 
       y=a + b_1*x_1 +b_2*x_2 + e
 
and want to have all a and b non-negative. How should I do?
The restrict option in Proc Reg only promisies equations.
Thanks in advance.
 
-JS