Thank you Ravi
Ravi Varadhan wrote: > > > Simply do this: > > lm(y ~ I(X1 - X2)) > > > Ravi. > ____________________________________________________________________ > > Ravi Varadhan, Ph.D. > Assistant Professor, > Division of Geriatric Medicine and Gerontology > School of Medicine > Johns Hopkins University > > Ph. (410) 502-2619 > email: rvarad...@jhmi.edu > > > ----- Original Message ----- > From: "CE.KA" <ce.kay...@yahoo.fr> > Date: Friday, October 30, 2009 7:48 pm > Subject: Re: [R] Multiple linear regression with constraint (imposition) > To: r-help@r-project.org > > >> Sorry there was a mistake: >> >> Hi R users >> >> I want to do a multiple linear regression with R >> >> With a normal model (Y=Cste+A1*X1+A2*X2) the program would be >> lm(Y~X1+X2) >> >> My model is Y=Cste+A1*X1+A2*X2 with the constraint A1=-A2 >> What is the program for such a model? >> >> Best regards >> >> >> -- >> View this message in context: >> Sent from the R help mailing list archive at Nabble.com. >> >> ______________________________________________ >> R-help@r-project.org mailing list >> >> PLEASE do read the posting guide >> and provide commented, minimal, self-contained, reproducible code. > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > > -- View this message in context: http://old.nabble.com/Multiple-linear-regression-with-constraint-%28imposition%29-tp26138081p26141448.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.