Help - Old:Node (until 2.0.24)
|This article describes this feature for TreeGraph 2.0.24 or (not necessaryly all) earlier versions. See here for the article on the latest version and a list on other available article versions.|
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.)
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 Apply name table-function as the identifying node/branch data column.
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.