Yes, solving systems of linear equations is a strength of R and is very easy. Doug Bates has a nice article in a prior version of R News showing optimal methods for doing this in R. Here is an example using your data: X <- matrix(c(353,45,29,45,29,3,29,3,4), ncol=3) y <- c(79,5,8) solve(crossprod(X))%*%crossprod(X,y) See Doug's article at the following link: http://cran.r-project.org/doc/Rnews/Rnews_2004-1.pdf -----Original Message----- From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Jim Gustafsson Sent: Wednesday, May 25, 2005 8:31 AM To: r-help at stat.math.ethz.ch Subject: [R] Linear system Dear R-help I have a problem solving a linear system like 353a+45b+29c=79 45a+29b+3c=5 29a+3b+4c=8 Is there any way of doing this in R? Best Regards Jim ------------------------------------------------------------------------ ------ This e-mail and any attachment may be confidential and may also be privileged. If you are not the intended recipient, please notify us immediately and then delete this e-mail and any attachment without retaining copies or disclosing the contents thereof to any other person. Thank you. ------------------------------------------------------------------------ ------ ______________________________________________ R-help at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Linear system
1 message · Doran, Harold