recluster.group.col: Computes mean coordinate values and RGB colours.

In leondap/recluster: Ordination Methods for the Analysis of Beta-Diversity Indices

Computes mean coordinate values and RGB colours.

Description

This function computes barycenters and their RGB colours for cases belonging to the same group from an original RGB colour matrix obtained by recluster.col.

Usage

recluster.group.col(mat,member)

Arguments

mat	An inherited matrix from recluster.col containing the original RGB colour space.
member	A vector indicating group membership for each case.

Value

aggr	A matrix in the recluster.col format with mean values for coordinates and RGB colours for groups.
all	A matrix in the recluster.col format reporting mean RGB colours of the group of each original case.

Author(s)

Leonardo Dapporto and Matteo Ramazzotti

References

Kreft H., Jetz, W. "A framework for delineating biogeographic regions based on species distributions" J Biogeogr (2010),37: 2029-2053.

Dapporto, L., Fattorini, S., Voda, R., Dinca, V., Vila, R. "Biogeography of western Mediterranean butterflies: combining turnover and nestedness components of faunal dissimilarity." J Biogeogr (2014), 41: 1639-1650.

Examples

data(datamod)
sordiss<- recluster.dist(datamod,dist="sorensen")
points<-cmdscale(sordiss)
col<-recluster.col(points)
group<-c(1,2,3,3,3,1,2,1,2)
ncol<-recluster.group.col(col,group)
recluster.plot.col(ncol$aggr)

leondap/recluster documentation built on Nov. 11, 2024, 7:11 a.m.