is an option for Tree and related functions that specifies what styles should be used for edges.


ParentEdgeStyle
is an option for Tree and related functions that specifies what styles should be used for edges.
Details

- ParentEdgeStyle allows specifying the style 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:
-
Automatic use the automatic style style use style for the edge » Allstyle use style for all edges » TreeCases[pattern]style use style for edges at nodes with data matching pattern » "Leaves"style use style for edges at leaves » "NonLeaves"style use style for edges at non-leaves » {pos1style1,pos2style2,…} use stylei for the edge at relative position posi » {patt1lbl1,patt2lbl2,…} use stylei for edges at positions matching the pattern patti » - Subtrees with no explicit edge style posstyle are taken to use the automatic style.
- ParentEdgeStyle can apply to lines and faces.
- To specify multiple style directives, use Directive[style1,style2,…].
- Edge style specifications are effectively applied in the order ParentEdgeStyle, ParentEdgeStyleFunction and ParentEdgeShapeFunction, with later specifications overriding earlier ones.
Examples
open all close allBasic Examples (4)
Properties & Relations (4)
Styles for edges can be specified by position:
Styles specified by a subtree take precedence over styles 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 position {i,j,…} that match patt:
A list of patterns {patt1,patt2,…} applies to relative positions {i,j,…} that match patti:
Related Guides
History
Text
Wolfram Research (2022), ParentEdgeStyle, Wolfram Language function, https://reference.wolfram.com/language/ref/ParentEdgeStyle.html.
CMS
Wolfram Language. 2022. "ParentEdgeStyle." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/ParentEdgeStyle.html.
APA
Wolfram Language. (2022). ParentEdgeStyle. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ParentEdgeStyle.html
BibTeX
@misc{reference.wolfram_2025_parentedgestyle, author="Wolfram Research", title="{ParentEdgeStyle}", year="2022", howpublished="\url{https://reference.wolfram.com/language/ref/ParentEdgeStyle.html}", note=[Accessed: 05-August-2025]}
BibLaTeX
@online{reference.wolfram_2025_parentedgestyle, organization={Wolfram Research}, title={ParentEdgeStyle}, year={2022}, url={https://reference.wolfram.com/language/ref/ParentEdgeStyle.html}, note=[Accessed: 05-August-2025]}