Modifying annotations

This is another example, in addition to "Annotations and Pre-Order Traversal", that shows how annotations can be modified without a Pre-Order search.

Here, we show show how annotations can be extracted and modified in a loop. We swap Blue an Green type annotations to Red and Yellow on a small tree.

All node objects have an annotation field where annotations. The annotation field itself stores an object for all annotated tags. For example Node.annotations = {Type: Blue} for some leaf nodes in the following example.

Altered annotations are then written back to newick.

See the Pen modify-annotations by Leo Featherstone (@LeoFeatherstone) on CodePen.