# knn: Simple implementation of k-nearest-neighbours
# A package for the R statistical environment
# Copyright (C) 2015 Matthew Upson <ivyleavedtoadflax@gmail.com>
#
# 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 3 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.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
#' @title rowNorms
#'
#' @description \code{rowNorms} rowNorms
#'
#' @param x \code{x} A matrix object of \code{nrows >= 1} and \code{ncol >= 2}.
#'
#' @examples
#'
#' # a <- matrix(1:20, ncol = 2)
#'
#' #rowNorms(a)
#'
rowNorms <- function(x) {
norms <- sqrt(rowSums(x ^ 2))
return(norms)
}
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