Format conversion and graphical representation of Universal Dependencies trees.

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││    ┌───│┤         ┌───│┤         │┌──┐│    │
↓│    ↓   ↓│         ↓   ↓│         ↓│  ↓│    ↓
ROOT  Je  reconnais  l'  existence  du  kiwi  .

First install Pycairo's dependencies.

If you use Windows, Pycairo won't install automatically anyway but you can install it manually from the unoficial wheels.

If you can't or don't want to install Pycairo on your system, skip this and omit [images] extras in the following step.

Install ginger from Pypi¹

python3 -m pip install gingertree[images]

(Either with --user or in a virtualenv but you knew that already, didn't you?)

You can also install it directly from the tip (unstable but usually safe) of the master branch whith

python3 -m pip install git+https://github.com/LoicGrobol/ginger/[images]

Test if everything works by running ginger examples/test.conll. The output should be the same as the ASCII-art tree above.

_{↑1. It's gingertree because ginger is being squatted ☹ if you know how to fix that, please let me know.}

ginger [--from <format>] <in-file> [--to] [<out-file>]

• <in-file> input file (in CoNLL-U format), - for standard input
• <out-file> output file, - for standard input (default: -)

• -f, --from <format> input file format, see below (default: guess)
• -t, --to <format> output file format, see below (default: ascii)
• -h, --help Get some help

• Print to stdout

  ginger examples/test.conll

• Assume CoNLL-X for input format

  ginger -f conllx spam.conllx

• Output TikZ code

  ginger examples/test.conll -t tikz

• Print to a file

  ginger examples/test.conll examples/output.asciiart

• Pipe in and out

  cat examples/test.conll | ginger - | less

• guess Try to guess the file format, defaults to CoNLL-U

• conllu CoNLL-U v2 format
• conllx CoNLL-X format
• conll2009_gold CoNLL-2009 format
  • Takes only the gold columns into account.
  • The P- and -PRED attributes are preserved in the misc attribute of the intermediate CoNLL-U tree.
• conll2009_sys CoNLL-2009 format
  • Takes only the predicted columns into account.
  • The gold columns and the -PRED attributes are preserved in the misc attribute of the intermediate CoNLL-U tree.

Formats used by mainstream NLP tools

• talismane Outputs of Talismane
• mate_gold Input/Output of mate-tools (actually an alias for conll2009_gold)
• mate_sys Input/Output of mate-tools (actually an alias for conll2009_sys)

The input must be either the path to an existing file or - for standard input. The data that it contains must be in one of the following formats:

• guess Try to guess the file format, defaults to CoNLL-U
• conllx CoNLL-X format
• conllu CoNLL-U format
• conll2009_gold CoNLL-2009 format (Gold columns only)
• conll2009_sys CoNLL-2009 format (Predicted columns only)
• talismane Outputs of Talismane
• mate_gold Alias for conll2009_gold, used by mate-tools
• mate_sys Alias for conll2009_sys, used by mate-tools

Note: no real effort is made to preserve informations that are not relevant to Universal Dependencies, so this might be information-destructive, e.g. if converting from CoNLL-2009 to itself, the P- attributes will be dropped.

To use these formats, the output destination must be either a file and thus must not be the path to an existing directory, or - for the standard output.

• ascii ASCII-art (using unicode characters, because, yes, we are subversive)
• tikz-dependency LaTeX code using the tikz-dependency package
• tikz TikZ code. Use the positioning, calc and shapes.multipart tikz libraries
  • The output is only the \tikzpicture part, not a whole compilable document, there is an example of such a document in example.
  • The code is quite verbose since we chose to rely on TikZ' own arithmetic capabilities in order to allow easier edition and reuse of the generated code.

To use these formats, the output destination must be either a directory and thus must not be the path of an existing file, or - for the standard output, in which case the byte streams corresponding to different trees will be separated by NULL bytes.

• png
• svg
• pdf

Development and releases on Github.

• When importing non-CoNLL-U treebanks, node forms with spaces are considered to be fixed expressions, and are treated according to the UD guidelines by splitting them in single-token nodes linked by fixed dependencies This mean that the exceptions mentioned in the UDv2 guidelines are not supported for those imports. They are supported when importing from CoNLL-U, though.

This licence (the so-called “MIT License”) applies to all the files in this repository. See also LICENSE.md.

Copyright 2022 Loïc Grobol <loic.grobol@gmail.com>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
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