- Creates a png image which can be easily copied elsewhere.
- Uses efficiently spaced trees (see )
- Automatically closes brackets.
- Automatically opens brackets (triggered by an ALL-CAPS node label)
Check it out and let me know any bugs and/or feature requests. I’m considering an option to output qtree-style latex code, but I haven’t implemented it yet. Also, I know that the dimensions of the png files are a little too large right now.
Using the default options can feel a little weird, but you’ll soon see how fast it can be to input standard trees. For instance, type “S NP” and you’ll see:
Then, add “John] VP” to get:
Round it out with “V loves] NP Semantics” to get:
And you only needed two brackets!
 An algorithm from http://billmill.org/pymag-trees/ based on:
Buchheim, Christoph, Michael Jünger, and Sebastian Leipert. “Improving Walker’s algorithm to run in linear time.” Graph Drawing. Springer Berlin Heidelberg, 2002.
Walker, John Q. “A node‐positioning algorithm for general trees.” Software: Practice and Experience 20.7 (1990): 685-705.