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From | Maarten buis <maartenbuis@yahoo.co.uk> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: list x matrix |
Date | Sat, 27 Mar 2010 13:46:33 -0700 (PDT) |
--- On Sat, 27/3/10, richard boylan wrote: > I have a list local var "x1 x2 x3 ...." > > and a 1 x n matrix (vector) > > b = (b1 b2 b3 ..) > > How do I compute the new variable > > z = b1*x1 + b2*x2 + b3*x3 + ... > > I mean I know how to do that by writing the sum, there just > has to be a better way of doing this. Matrix operations are usually best done in Mata. However, it is often not necessary to do them, e.g. the -xb()- function inside -nlpredict-, see -help nlpredict-. Hope this helps, Maarten -------------------------- Maarten L. Buis Institut fuer Soziologie Universitaet Tuebingen Wilhelmstrasse 36 72074 Tuebingen Germany http://www.maartenbuis.nl -------------------------- * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/