Leaf edges

This example shows how to use leaf edges, dashed lines connecting each leaf to the deepest leaf and label.

from ete4 import Tree
import iplotx as ipx

tree = Tree(
    "((),((),(((),()),((),()))));",
)

ipx.plotting.tree(
    tree,
    leaf_labels={leaf: str(i + 1) for i, leaf in enumerate(tree.leaves())},
)

<iplotx.tree.TreeArtist object at 0x7dd1fb789950>

Leaf edges are used by default when leaf labels are present and deep leaves are set (default). If you use shallow leaves, leaf edges are not plotted:

ipx.plotting.tree(
    tree,
    leaf_labels={leaf: str(i + 1) for i, leaf in enumerate(tree.leaves())},
    leaf_deep=False,
)

<iplotx.tree.TreeArtist object at 0x7dd1a5d20550>

Similarly, if there are no leaf labels, leaf edges are not plotted:

ipx.plotting.tree(
    tree,
)

<iplotx.tree.TreeArtist object at 0x7dd1fb775e50>

You can finely tune this behaviour. For instance, you can force leaf edges despite absence of leaf labels, and change their visual appearance:

ipx.plotting.tree(
    tree,
    leaf_deep=True,
    leafedge_color="tomato",
    leafedge_linewidth=2,
    leafedge_linestyle="-.",
)

<iplotx.tree.TreeArtist object at 0x7dd1a61356d0>