README.md
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 ggtree: an R package for visualization and annotation of phylogenetic trees with their covariates and other associated data
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 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 on the tree.
 
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 Please cite the following article when using `ggtree`:
 
 **G Yu**, DK Smith, H Zhu, Y Guan, TTY Lam<sup>\*</sup>. ggtree: an R package for visualization and annotation of phylogenetic trees with their covariates and other associated data. ***Methods in Ecology and Evolution***. *accepted*
 
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 [![doi](https://img.shields.io/badge/doi-10.1111/2041--210X.12628-green.svg?style=flat)](http://dx.doi.org/10.1111/2041-210X.12628) [![citation](https://img.shields.io/badge/cited%20by-1-green.svg?style=flat)](https://scholar.google.com.hk/scholar?oi=bibs&hl=en&cites=7268358477862164627) [![Altmetric](https://img.shields.io/badge/Altmetric-171-green.svg?style=flat)](https://www.altmetric.com/details/10533079)
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 For details, please visit our project website, <https://guangchuangyu.github.io/ggtree>.
 
 -   [Documentation](https://guangchuangyu.github.io/ggtree/documentation/)
 -   [FAQ](https://guangchuangyu.github.io/ggtree/faq/)
 -   [Featured Articles](https://guangchuangyu.github.io/ggtree/featuredArticles/)
 -   [Feedback](https://guangchuangyu.github.io/ggtree/#feedback)
 
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 ### Citation
 
 [![citation](https://img.shields.io/badge/cited%20by-1-green.svg?style=flat)](https://scholar.google.com.hk/scholar?oi=bibs&hl=en&cites=7268358477862164627)
 
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 ### Download stats
 
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 [![download](http://www.bioconductor.org/shields/downloads/ggtree.svg)](https://bioconductor.org/packages/stats/bioc/ggtree/) [![total](https://img.shields.io/badge/downloads-14940/total-blue.svg?style=flat)](https://bioconductor.org/packages/stats/bioc/ggtree) [![month](https://img.shields.io/badge/downloads-1678/month-blue.svg?style=flat)](https://bioconductor.org/packages/stats/bioc/ggtree)
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