Tree Types

TidyTree provides three different types of trees. They are:

Trees

In this context, a "Tree" is a tree in which each node is located according to the number of branches between it and the root node.

Weighted Dendrogram

A Weighted Dendrogram uses reported branch lengths to determine how far away from the root node any given node should be located. This is probably the one you'll want to use.

Unweighted Dendrogram

An unweighted dendrogram places all leaf nodes at the "bottom" of the diagram, and distributes the branches as evenly as possible up to the root node.

Why does my ruler disappear when I use an unweighted dendrogram?

Because distances in an unweighted dendrogram are completely arbitrary.