RSyntaxTree

Syntax tree generator made with Ruby

_{Left-click to focus; right-click to save image

Image-area and text-area are vertically resizable}

●

[S [NP ^|R|<>SyntaxTree] [VP [V generates] [NP [Adj #\+multilingual\ \+beautiful] [NP syntax\ trees] ] ] ]

_{In version 1.0, the tree drawing syntax has changed significantly.

Please see the
documentation and
examples.}

Auto-close brackets

Connector shape

Font style

Font size

Margin

Connector height

Polyline

On Off

Colorization

On Off

Transparent Background

On Off

Radical Symmetrization

On Off

RSyntaxTree Version: 1.0.6

Note: Text markup syntax has been comprehensively renewed in version 1.0.0. Please refer to the documentation.

RSyntaxTree is a graphical syntax tree generator written in the Ruby programming language created by Yoichiro Hasebe.

The original version of RSyntaxTree was inspired by phpSyntaxTree by André Esenbach.

Command-line version of RSyntaxTree is available at GitHub.

See RSyntaxTree Documentation and Examples.

Polyline connector option [February 2022]
Improved user interface (error message display; image zoom, etc.) [January 2022]
Comprehensive code rewrite [January 2022]
Path drawing functionality (non-directional, directional, bidirectional) [January 2022]
Text markup is more flexibly applicable than before [January 2022]
New text markup patterns (newlines, brackets, horizontal lines, boxed texts) [January 2022]
Triangle can be specified in all connector modes (auto, bar, none) [January 2022]

Superscript (e.g. T⁰) specification is possible [December 2021]
Newline characters \n can be used inside terminal nodes [December 2021]
Label-less terminal nodes are now allowed (e.g. [A [B] [C]]) [November 2021]
Auto bracket close option [November 2021]
Math symbol rendering [November 2021]
Better image quality [November 2021]
Some decoration symbols have been altered [November 2021]
System fix (SVG download error) [November 2019]
Bug fix (SVG color on/off) [April 2019]
White spaces can be included in node labels with the <> notation (e.g. Modal<>AUX) [June 2018]
Various sizes of margin to the image [February 2018]
Better text editor using Ace [February 2018]
Connector height option [March 2018]
Syntax highlighting of input text [March 2018]
Refined site design and documentation [March 2018]
Text styles (italic and bold) and decoration (underline, overline, line-through) [March 2018]

Yoichiro HASEBE