| # File src/library/base/R/labels.R |
| # Part of the R package, https://www.R-project.org |
| # |
| # Copyright (C) 1998 B. D. Ripley |
| # Copyright (C) 1998-2012 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/ |
| |
| labels <- function(object, ...) UseMethod("labels") |
| |
| labels.default <- function(object, ...) |
| { |
| if(length(d <- dim(object))) { # array or data frame |
| nt <- dimnames(object) |
| if(is.null(nt)) nt <- vector("list", length(d)) |
| for(i in seq_along(d)) |
| if(!length(nt[[i]])) nt[[i]] <- as.character(seq_len(d[i])) |
| } else { |
| nt <- names(object) |
| if(!length(nt)) nt <- as.character(seq_along(object)) |
| } |
| nt |
| } |