recluster (version 2.8)

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

Description

This function computes barycenters and their RGB colours for cases belonging to the same group in 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 with mean RGB colours computed for the group of each original case.

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. www.unifi.it/scibio/bioinfo/recluster.html

Examples

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