Nothing
Offers faster manipulation of dendrogram objects in R. A dendrogram object in R is a list structure with attributes in its nodes and leaves. Working with dendrogram objects often require a function to recursively go through all (or most) element in the list object. Naturally, such function are rather slow in R, but can become much faster thanks to 'Rcpp'.
Package details 


Author  Tal Galili [aut, cre, cph] (http://www.rstatistics.com), Romain Francois [ctb], Dirk Eddelbuettel [ctb], Kevin Ushey [ctb], Yoav Benjamini [ths] 
Maintainer  Tal Galili <tal.galili@gmail.com> 
License  GPL2  GPL3 
Version  0.6.1 
URL  https://github.com/talgalili/dendextendRcpp/ http://cran.rproject.org/web/packages/dendextendRcpp/ 
Package repository  View on CRAN 
Installation 
Install the latest version of this package by entering the following in R:

Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.