rencontre non payante Links: Clustering methods in R
Clustering using standard R functions
http://www.statmethods.net/advstats/cluster.html
Using heatmat and heatmap.2
http://www2.warwick.ac.uk/fac/sci/moac/students/peter_cock/r/heatmap/
Drawing k-means clusters on heatmap and introducing pheatmap
http://stackoverflow.com/questions/5084077/r-draw-kmeans-clustering-with-heatmap