Help - Node

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A node in a TreeGraph document can be either an internal node with several subnodes or a terminal node. Every node can store a text or numeric value which could e.g. be used for a taxon name and is usually called node name. The value is only displayed if the node is terminal. Furthermore you can add an unlimited number of additional textual or numeric values to a node by means of hidden node data.

Nodes, branches and their connections to each other make up the topology of a tree and are therefore the most important document elements in TreeGraph 2. Every node has a parent node (if it is not the root) and can contain an unlimited number of subnodes. Two nodes are always connected by a branch. (Note that unlike many other applications TreeGraph 2 does not consider branches simply as a part of a node but as elements of the tree that can be individually addressed.)

ArticleOnLatestVersion.png This article describes this feature for the latest version of TreeGraph 2. For older versions the following articles are available:
Node (until 2.0.24)


Unique node name

Besides the node name and hidden node data every node has an automatically generated unique node name (which distinctively identifies the node in its document). This unique name is e.g. used to identify a node in the XTG format but could also be used with the Import table-function as the identifying node/branch data column.

Node formats

A node is both a line- and a text-element, so that line formats and text formats can be applied to it although line formats only effect internal whereas text text formats only effect terminal nodes. For internal nodes you can furthermore specify the corner radius which defines the rounding of the node lines connecting to the highest and the lowest subbranch.

All node formats can be set in the element formats dialog.

Leaf margin

Defines the space that should be left around a node if it is a terminal (e.g. displaying a taxon names). Internal nodes are not affected by this format.

See also