Calling tree : ~~~~~~~~~~~~ scobs() | |-> shat | | | \-> dn | |-> qbsks | | |---|-> getdim | | | v \-> drqssbc | / | / (possibly calls itself once) |-- | |-> l1.design | |-> l00.design | \-> .Fortran("drqssbc", ..) ---------------------------------------------------------------- qbsks(x,y,w,pw, knots,nknots, degree,Tlambda,constraint, equal,smaller,greater,gradient, coef,maxiter, pswitch, n.equal,n.smaller,n.greater,n.gradient, nrq,nl1, neqc, nj0, tau,lam,tmin,kmax,lstart, ks,mk.flag, knots.add, ic, print.mesg, factor,print.warn) drqssbc(x,y,w,pw, knots, degree,Tlambda,constraint, equal,smaller,greater,gradient, coef,maxiter, pswitch, n.equal,n.smaller,n.greater,n.gradient, nrq,nl1, neqc,niqc, nvar,nj0, tau,lam,tmin,kmax,lstart, factor,print.warn) ------------------------------------------------------------------------------- The following relates to the older COBS version, nowadays in package "cobs99" -------------------------------------------------------- -------------------------------------------------------- COBS -- Constrained B-splines (Version 1.0) COBS is a constrained B-splines algorithm that computes constrained quantile curves using linear or quadratic splines. The median spline may be used as an attractive alternative to constrained smoothing. A postscript version of the paper that describes the detail of COBS can be downloaded from http://www.cba.nau.edu/pin-ng/cobs.html This is a *beta* version ------------------------ We do appreciate comments and suggestions. Please send bugs or problems to Martin Maechler and also pin-ng@nau.edu or he@bahadur.stat.uiuc.edu Martin Maechler http://stat.ethz.ch/~maechler/ Seminar fuer Statistik, ETH-Zentrum LEO C16 Leonhardstr. 27 ETH (Federal Inst. Technology) 8092 Zurich SWITZERLAND Pin T. Ng College of Business Administration PO Box 15066 Flagstaff, AZ 86011-5066 vox: (928) 523-8726 fax: (928) 523-7331 e-mail: Pin.Ng@nau.edu url: http://www.cba.nau.edu/pin-ng old affiliations : Pin T. Ng Xuming He Department of Economics Department of Statistics University of Illinois University of Illinois Champaign, IL 61820 Champaign, IL 61820 ------------------------------------------------------------------------ Dec 20, 2001: Prof. Pin T. Ng explicitly allowed Martin Maechler to port and distribute this for R. --> First public release to CRAN, 18 April 2002, version 0.9-3 See also the following files name content -------- ------------------------------------------------ ./TODO Martin's "to do" list (he has also ./00-FIXME) ./ChangeLog Martin's ``log book'' on changes done. ./R_README calling tree of R functions, .. ./inst/scripts/README about Ng&He (1994)'s 3 examples ./tests/README explaining a bit about current "instability" problem ------------------------------------------------------------------------------ Martin Maechler http://stat.ethz.ch/~maechler/ Seminar fuer Statistik, ETH-Zentrum LEO C16 Leonhardstr. 27 ETH (Federal Inst. Technology) 8092 Zurich SWITZERLAND