The lasso2 and lars packages use l1 constraints in their routines. Depending on what you are trying to accomplish, they may do what you want, or looking at their code could give additional ideas.
Hope this helps, -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare [EMAIL PROTECTED] (801) 408-8111 > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Tine Mlac > Sent: Thursday, July 03, 2008 2:47 PM > To: r-help@r-project.org > Subject: [R] L1 nonlinear approximation > > Hi! > > Does anyone knows a solver or R package for L1 nonlinear > constrained approximation besides constrOptim or optim and > Nelder-Mead method? > > Bye, > Tine > > ps.: L1 means L1-norm => sum of absolute values. > > ______________________________________________ > 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. > ______________________________________________ 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.
