[R-sig-eco] Reordering dendogram

[Tania Bird]

I am trying to control the order and colour of a dendrogram. Obviously
the point of the dendorgram is to order by similarity, but within
branches I'd like to set an order that make sense
(alphabetical-numeric).

library(vegan)
library(stats)

x <-data.frame(data = c(1:10))
y = data.frame(type = c("A","B","C","A","C","D","A","B","C","B"),
site_name = c("A1","B1","C1","A2","C2","D1","A3","B2","C3","B3"))
row.names(x) = y$site_name
dis = vegdist(x)
hc <- hclust(dis)
dd <- as.dendrogram(hc)
plot(dd)

My data labels are text but they do have a set order listed in a variable

site_order = c("A1","A2","A3","B1","B2","B3","C1","C2","C3","D1")

1) I'd like to find a solution that sorts the dendogram according to
site_order within branches.

e.g. A1,B1,        A2, C1,   C2,D2,             A3,B2,     B3,C3

I also want to colour and shape the labels using site_type e.g (A= red
circle , B= blue square , C= green triangle, D = yellow cross)

Is this possible?


Thanks

Tania Bird MSc
"There is a sufficiency in the world for man's need but not for man's
greed" ~ Mahatma Gandhi

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