| # File src/library/stats/R/lowess.R |
| # Part of the R package, https://www.R-project.org |
| # |
| # Copyright (C) 1995-2016 The R Core Team |
| # |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 2 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # A copy of the GNU General Public License is available at |
| # https://www.R-project.org/Licenses/ |
| |
| lowess <- function(x, y = NULL, f = 2/3, iter = 3L, |
| delta = 0.01 * diff(range(x))) |
| { |
| xy <- xy.coords(x,y, setLab = FALSE) |
| o <- order(xy$x) |
| x <- as.double(xy$x[o]) |
| list(x = x, y = .Call(C_lowess, x, as.double(xy$y[o]), f, iter, delta)) |
| } |