If you search the hashtag, #phylomoji, in twitter, you can find many creative phylogenetic tree constructed with emoji.

#phylomoji with Darwin's water bears! @OxyEvo | | |_____| | |_____| |_____| |

— Matthew Weiser (@weisguy318) September 16, 2015

#Phylomoji MicroRNAs ” class=”wp-smiley” style=”height: 1em; max-height: 1em;” />” class=”wp-smiley” style=”height: 1em; max-height: 1em;” />” class=”wp-smiley” style=”height: 1em; max-height: 1em;” />” class=”wp-smiley” style=”height: 1em; max-height: 1em;” />” class=”wp-smiley” style=”height: 1em; max-height: 1em;” />” class=”wp-smiley” style=”height: 1em; max-height: 1em;” /> |___| | |___| Morphology ” class=”wp-smiley” style=”height: 1em; max-height: 1em;” />” class=”wp-smiley” style=”height: 1em; max-height: 1em;” />” class=”wp-smiley” style=”height: 1em; max-height: 1em;” />” class=”wp-smiley” style=”height: 1em; max-height: 1em;” />” class=”wp-smiley” style=”height: 1em; max-height: 1em;” />” class=”wp-smiley” style=”height: 1em; max-height: 1em;” /> | | | | |__| |___| DNA ” class=”wp-smiley” style=”height: 1em; max-height: 1em;” />” class=”wp-smiley” style=”height: 1em; max-height: 1em;” />” class=”wp-smiley” style=”height: 1em; max-height: 1em;” />” class=”wp-smiley” style=”height: 1em; max-height: 1em;” /> ” class=”wp-smiley” style=”height: 1em; max-height: 1em;” />” class=”wp-smiley” style=”height: 1em; max-height: 1em;” /> | | | | |__| |____|

— John McCormack (@LAevolving) May 15, 2015

Now with ggtree, you can play #phylomoji in R.

Newick tree text can be constructed with emoji directly in R, and we can parse the text and visualize it with only one single line of code.

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require(colorspace)
require(ggtree)
ggtree(read.tree(text=tree_text)) + geom_tiplab(color=rainbow_hcl(4))

Have fun with ggtree.

#phylomoji with #ggtree pic.twitter.com/LE07QJoBZ6

— Guangchuang Yu (@guangchuangyu) November 5, 2015

Note: In debian-based Linux, emoji works fine in both R console and plot if ttf-ancient-fonts was installed. In OS X, Apple Color Emoji.ttf works fine in R console, but not in R plotting. The figure posted in my tweet used OpenSansEmoji font.

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• September 24, 2015 — subsetting data in ggtree (0)
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