| # File src/library/graphics/R/stem.R |
| # Part of the R package, https://www.R-project.org |
| # |
| # Copyright (C) 1995-2013 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/ |
| |
| stem <- function(x, scale = 1, width = 80, atom = 0.00000001) |
| { |
| if (!is.numeric(x) ) stop("'x' must be numeric") |
| x <- x[is.finite(x)] |
| n <- as.integer(length(x)) |
| if (is.na(n)) stop("invalid length(x)") |
| if (n == 0) stop("no finite and non-missing values") |
| if (scale <= 0) stop("'scale' must be positive") # unlike S |
| .Call(C_StemLeaf, as.double(x), scale, width, atom) |
| invisible(NULL) |
| } |