| # File src/library/base/R/rowsum.R |
| # Part of the R package, https://www.R-project.org |
| # |
| # Copyright (C) 1995-2014 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/ |
| |
| rowsum <- function(x, group, reorder = TRUE, ...) UseMethod("rowsum") |
| |
| rowsum.default <- function(x, group, reorder = TRUE, na.rm = FALSE, ...) |
| { |
| if (!is.numeric(x)) stop("'x' must be numeric") |
| if (length(group) != NROW(x)) stop("incorrect length for 'group'") |
| if (anyNA(group)) warning("missing values for 'group'") |
| ugroup <- unique(group) |
| if (reorder) ugroup <- sort(ugroup, na.last = TRUE, method = "quick") |
| ## ugroup can be either a vector or a factor, so do as.character here |
| .Internal(rowsum_matrix(x, group, ugroup, na.rm, as.character(ugroup))) |
| } |
| |
| rowsum.data.frame <- function(x, group, reorder = TRUE, na.rm = FALSE, ...) |
| { |
| if (!is.data.frame(x)) stop("not a data frame") ## make MM happy |
| if (length(group) != NROW(x)) stop("incorrect length for 'group'") |
| if (anyNA(group)) warning("missing values for 'group'") |
| ugroup <- unique(group) |
| if (reorder) ugroup <- sort(ugroup, na.last = TRUE, method = "quick") |
| .Internal(rowsum_df(x, group, ugroup, na.rm, as.character(ugroup))) |
| } |