geom_nodelab() blank for circular trees

[cmt2]

I am attempting to add text node labels to a circular phylogeny. When I plot the tree as rectangular, geom_nodelab() works as expected:

ggtree::ggtree(example) + ggtree::geom_nodelab(ggplot2::aes(label = anc_state_1))

However when I set tree layout to circular, it fails to plot text at the nodes.
ggtree::ggtree(example, layout = "circular") + ggtree::geom_nodelab(ggplot2::aes(label = anc_state_1))

[FelixErnst]

I think you have to use the subset aesthetic in the mapping. It is not mentioned in the man page, but thats how I got it to work.

[swuyts]

Hi @cmt2,

I do not really understand why but if you use + layout_circular() instead of ggtree(example, layout = "circular") it seems to work. This way of creating the circular visualisation is mentioned here #352

Here's a reproducible example:

library(ggtree)
set.seed(111)
tree <- rtree(10)

# Rectangular layout => works
ggtree(tree) + geom_nodelab(aes(label = node))

# Circular layout => Does not work
ggtree(tree, layout = "circular") + geom_nodelab(aes(label = node))

# Circular layout => works
ggtree(tree) + geom_nodelab(aes(label = node)) + layout_circular()

[swuyts]

Building further on this. How can I get geom_nodelab to work again for a daylight visual?

This does not work:

ggtree(tree, layout = "daylight") + geom_nodelab(aes(label = node))

What is the + layout_circular() alternative for daylight?

[brj1]

You can use geom_text2() and geom_label2() with the daylight layout.

ggtree(tree, layout = "daylight") + geom_text2(aes(label = node, subset = !isTip))

[cmt2]

Thanks all! Seems like using the subset feature with geom_text2 or geom_label2 might be the most stable solution? Ideally this would work across the full range of layout options.

[GuangchuangYu]

fixed in #353.