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import random
from ete3 import Tree, TreeStyle, NodeStyle, faces, AttrFace, CircleFace
def layout(node):
if node.is_leaf():
# Add node name to laef nodes
N = AttrFace("name", fsize=14, fgcolor="black")
faces.add_face_to_node(N, node, 0)
if "weight" in node.features:
# Creates a sphere face whose size is proportional to node's
# feature "weight"
C = CircleFace(radius=node.weight, color="RoyalBlue", style="sphere")
# Let's make the sphere transparent
C.opacity = 0.3
# And place as a float face over the tree
faces.add_face_to_node(C, node, 0, position="float")
def get_example_tree():
# Random tree
t = Tree()
t.populate(20, random_branches=True)
# Some random features in all nodes
for n in t.traverse():
n.add_features(weight=random.randint(0, 50))
# Create an empty TreeStyle
ts = TreeStyle()
# Set our custom layout function
ts.layout_fn = layout
# Draw a tree
ts.mode = "c"
# We will add node names manually
ts.show_leaf_name = False
# Show branch data
ts.show_branch_length = True
ts.show_branch_support = True
return t, ts
if __name__ == "__main__":
t, ts = get_example_tree()
#t.render("bubble_map.png", w=600, dpi=300, tree_style=ts)
t.show(tree_style=ts)
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