Extending to custom types

To extend plotting trees with distances and automatic naming of nodes to your custom tree type. you need to extend BasicTreePlots.distance(node::YourType) which should return the flowting point distance from a node to its parent. And BasicTreePlots.label(node::YourType) which should return the name of the node as you want it represented in the plot.

An example extending the plotting library to NewickTree.Node type

module BasicTreePlotsNewickTreeExt
import BasicTreePlots, NewickTree
BasicTreePlots.distance(n::NewickTree.Node) = begin
    d = NewickTree.distance(n)
    isfinite(d) ? d : zero(typeof(d))
end
BasicTreePlots.label(n::NewickTree.Node) = NewickTree.name(n)
end

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