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LECASofts
ProcMod
Commits
cb97630c
Commit
cb97630c
authored
Jul 06, 2018
by
Eric Coissac
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multivariate.R
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R/multivariate.R
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cb97630c
#'
#' @import MASS
#'
NULL
...
...
@@ -7,6 +6,15 @@ library(MASS)
#' Project a distance matrix in a euclidean space (NMDS).
#'
#' Project a set of points defined by a distance matrix in
#' an eucleadean space using the Kruskal's Non-metric
#' Multidimensional Scaling. This function is mainly a simplified
#' interface on the \code{\link[MASS]{isoMDS}} function using as
#' much as possible dimensionsto limit the stress. The aims of this
#' NDMS being only to project point in an orthogonal space therefore
#' without any correlation between axis. Because a non-metric method
#' is used no condition is required on the used distance.
#'
#' @author Eric Coissac
#' @author Christelle Gonindard-Melodelima
#' @export
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@@ -40,6 +48,16 @@ nmds = function(distances,
#' Project a distance matrix in a euclidean space (PCOA).
#'
#' Project a set of points defined by a distance matrix in
#' an eucleadean space using the Principal Coordinates Analysis
#' method. This function is mainly a simplified
#' interface on the \code{\link[stats]{cmdscale}} function using as
#' much as possible dimensions for the projection. The aims of this
#' PCoA being only to project point in an orthogonal space therefore
#' without any correlation between axis. Because a metric method
#' is used the used distance must be euclidean
#' (cf \code{\link[ProcMod]{is.euclid}}).
#'
#' @author Eric Coissac
#' @author Christelle Gonindard-Melodelima
#' @export
...
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