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# diffusr: network diffusion algorithms in R
#
# Copyright (C) 2016 Simon Dirmeier
#
# This file is part of diffusr.
#
# diffusr 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.
#
# diffusr 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 diffusr. If not, see <http://www.gnu.org/licenses/>.
#' @noRd
.equals.double <- function(val, cmp, delta)
{
val <= cmp + delta & val >= cmp - delta
}
#' @noRd
.in <- function(val, lower, upper)
{
val >= lower & val <= upper
}
#' @noRd
.check.restart <- function(s)
{
name <- deparse(substitute(s))
if (!is.numeric(s))
stop(paste(name, "has to be numeric!"))
if (!.in(s, 0, 1))
stop(paste(name, "must be in [0, 1]!"))
}
#' @noRd
.check.graph <- function(m, v=NULL)
{
name.graph <- deparse(substitute(m))
name.vector <- deparse(substitute(v))
if (!is.matrix(m))
stop('please provide a matrix object!')
if (any(m < 0))
stop(paste0("'", name.graph, "' has to be non-negative"))
if (dim(m)[1] != dim(m)[2])
stop(paste(name.graph, "has to be of dimension (n x n)!"))
if (!is.null(v) && dim(m)[1] != dim(v)[1])
stop(paste(name.vector, "has to have same dimension as", name.graph))
}
#' @noRd
.check.starting.matrix <- function(v)
{
name <- deparse(substitute(v))
if (any(v < 0))
stop(paste(name, "can only contain non-negative values!"))
if (!is.matrix(v))
stop(paste("matrix-shaped", name, "required"))
}
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