# ggtree: a phylogenetic tree viewer for different types of tree annotations [](https://travis-ci.org/GuangchuangYu/ggtree) [](https://ci.appveyor.com/project/GuangchuangYu/ggtree/branch/master) The `ggtree` package extending the `ggplot2` package. It based on grammar of graphics and takes all the good parts of `ggplot2`. `ggtree` is designed for not only viewing phylogenetic tree but also displaying annotation data in the tree. ## Authors ## Guangchuang YU, School of Public Health, The University of Hong Kong [http://ygc.name](http://ygc.name) ## License ## All source code is copyright, under the Artistic-2.0 License. For more information on Artistic-2.0 License see [http://opensource.org/licenses/Artistic-2.0](http://opensource.org/licenses/Artistic-2.0) ## Installation ## To install: * the latest development version: `install_github("GuangchuangYu/ggtree")` ## Documentation ## + [viewing and annotating phylogenetic tree with ggtree](http://ygc.name/2014/12/21/ggtree/) + [updating a tree view using %<% operator](http://ygc.name/2015/02/10/ggtree-updating-a-tree-view/) + [an example of drawing beast tree using ggtree](http://ygc.name/2015/04/01/an-example-of-drawing-beast-tree-using-ggtree/) To view the vignette of `ggtree` installed in your system, start `R` and enter: ```r vignette("ggtree", package = "ggtree") ``` ## Bugs/Feature requests ## - If you have any, [let me know](https://github.com/GuangchuangYu/ggtree/issues). Thx!