The following files are based on the work of others. src/ppr.f J. H. Friedman's (1984) SMART package. Converted to double precision and interface to smoothing splines by B. D. Ripley. src/bsplvd.f src/bvalue.f src/bvalus.f src/qsbart.f src/sbart.f src/sgram.f src/sinerp.f src/sslvrg.f src/stxwx.f From the public domain source of the package GAMFIT by T. Hastie and R. Tibshirani, converted to double precision and with consistency changes to the calls to bvalue. Original at http://lib.stat.cmu.edu/general/gamfit. src/loessc.c src/loessf.f From the cloess package on netlib (section a). The following statement applies to these files: The authors of this software are Cleveland, Grosse, and Shyu. Copyright (c) 1989, 1992 by AT&T. Permission to use, copy, modify, and distribute this software for any purpose without fee is hereby granted, provided that this entire notice is included in all copies of any software which is or includes a copy or modification of this software and in all copies of the supporting documentation for such software. THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR AT&T MAKE ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. The files are unchanged apart from the insertion of that statement. All other files are copyright the R Core Development Team and/or B. D. Ripley.