ggtree with funny fonts

June 12, 2015
By

(This article was first published on YGC » R, and kindly contributed to R-bloggers)

showtext is a neat solution to use various types of fonts in R graphs and make it easy to use funny fonts.

With showtext, we can draw phylogenetic tree with different types of fonts even with symbolic/icon fonts.

?View Code RSPLUS

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require(showtext)
 
font.add.google("Gochi Hand", "gochi")
font.add.google("Rock Salt", "rock")
 
link = "http://img.dafont.com/dl/?f=wm_people_1";
download.file(link, "wmpeople1.zip", mode = "wb");
unzip("wmpeople1.zip");
font.add("wmpeople1", "wmpeople1.TTF");
 
link = "http://img.dafont.com/dl/?f=emoticons";
download.file(link, "emoticons.zip", mode = "wb");
unzip("emoticons.zip");
font.add("emoticons", "emoticons.ttf");
 
 
showtext.auto()
set.seed(2015-05-14)
 
library(ggplot2)
library(ggtree)
 
tree <- rtree(30)
ggtree(tree, color="darkgreen") + geom_tiplab(family="gochi") + theme_classic() +
    theme(axis.text.x=element_text(size=rel(4), family="emoticons", color="firebrick")) +
        scale_y_continuous(breaks=seq(0, 30, 4), labels=letters[c(12:17, 20, 21)]) +
            theme(axis.text.y=element_text(size=rel(4), family="wmpeople1", color="#FDAC4F")) +
                annotate("text", x=2, y=18, label="Have fun with ggtree!",
                         family="rock", angle=30, size=12, color="steelblue")

?View Code RSPLUS

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download.file("http://dl.dafont.com/dl/?f=people_freak", "people_freak.zip", mode="wb")
unzip("people_freak.zip")
font.add("people_freak", "People_freak.ttf")
ggtree(rtree(10)) + geom_text(aes(label=node, color=isTip), family="people_freak", hjust=0)

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