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heatcon
2011 Mar 02
2
clustering problem
...ot anymore able to use cutree to access individual clusters. In general
I do something like this:
hc <- hclust(dist(USArrests), "ave")
library(RColorBrewer)
library(gplots)
clrno=3
cols<-rainbow(clrno, alpha = 1)
clstrs <- cutree(hc, k=clrno)
ccols <- cols[as.vector(clstrs)]
heatcol<-colorRampPalette(c(3,1,2), bias = 1.0)(32)
heatmap.2(as.matrix(USArrests), Rowv=as.dendrogram(hc),col=heatcol,
trace="none",RowSideColors=ccols)
Nice, I can access 3 main clusters with cutree. But what about a situation
when I perform hclust like
hc <- hclust(dist(t(USArrests)),...