TnT Tree
This interactive phylogenetic tree visualization renders a Newick-format dataset using the TnT tree API and D3 v3. It displays a collapsible tree where nodes toggle between circular and triangular markers via a click handler, and hover events highlight the path from a selected leaf back to the root by adding a `marked` class to corresponding `path.tnt_tree_link` elements. A button switches the layout between vertical and radial modes using the `tnt.tree.layout` API.
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This example is forked from Collapsible nodes.
This framework is awesome but i still feel very strange while using d3.selection.classed() function, for some of the path selections can not attach one specific class name. Very odd behavior!
More information relate to Newick Format please reference Wikipedia and TnT tree API.