ParentEdgeLabelFunction

ParentEdgeLabelFunction

is an option for Tree and related functions that specifies functions to use to generate edge labels.

Details

  • ParentEdgeLabelFunction allows specifying the function to generate the label of the parent edge of the root node of a tree, as well as that of any subtrees at positions matching a pattern.
  • The following option settings can be used:
  • Automaticuse the keys of any associations as the labels
    Noneuse no label
    funca general edge label function »
    Allfuncuse label function func for all edges »
    TreeCases[pattern]funcuse func for edges at nodes with data matching pattern »
    "Leaves"funcuse func for edges at leaves »
    "NonLeaves"funcuse func for edges at non-leaves »
    {pos1func1,pos2func2,…}use funci for the edge at relative position posi »
    {patt1func1,patt2func2,…}use funci for edges at positions matching patti »
  • Edge label specifications are effectively applied in the order ParentEdgeLabel, ParentEdgeLabelFunction and ParentEdgeLabelStyle, with later specifications overriding earlier ones.
  • ParentEdgeLabelFunctionfunc specifies that the label of the parent edge of the root node should be provided by func[data], where data is the data in the root.

Examples

open allclose all

Basic Examples  (4)

Label an individual edge:

Specify a list of edge label functions:

Use no edge labels:

Specify label functions for the leaf and non-leaf edges:

Scope  (2)

Specify positions using position patterns:

Specify positions using data patterns:

Properties & Relations  (5)

Edges are automatically labeled with the keys of any associations of children:

No labels are used for lists of children:

Labels for edges can be specified by position:

Labels specified by a subtree take precedence over labels specified by its ancestors:

A position {i,j,…} in a subtree refers to its subtree at relative position {i,j,…}:

A relative position {2} at position {1} refers to the global position {1,2}:

In general, a pattern patt applies to subtrees at global positions {i,j,…} that match patt:

A list of patterns {patt1,patt2,…} applies to relative positions {i,j,…} that match the patti:

Wolfram Research (2022), ParentEdgeLabelFunction, Wolfram Language function, https://reference.wolfram.com/language/ref/ParentEdgeLabelFunction.html.

Text

Wolfram Research (2022), ParentEdgeLabelFunction, Wolfram Language function, https://reference.wolfram.com/language/ref/ParentEdgeLabelFunction.html.

CMS

Wolfram Language. 2022. "ParentEdgeLabelFunction." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/ParentEdgeLabelFunction.html.

APA

Wolfram Language. (2022). ParentEdgeLabelFunction. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ParentEdgeLabelFunction.html

BibTeX

@misc{reference.wolfram_2024_parentedgelabelfunction, author="Wolfram Research", title="{ParentEdgeLabelFunction}", year="2022", howpublished="\url{https://reference.wolfram.com/language/ref/ParentEdgeLabelFunction.html}", note=[Accessed: 20-January-2025 ]}

BibLaTeX

@online{reference.wolfram_2024_parentedgelabelfunction, organization={Wolfram Research}, title={ParentEdgeLabelFunction}, year={2022}, url={https://reference.wolfram.com/language/ref/ParentEdgeLabelFunction.html}, note=[Accessed: 20-January-2025 ]}