Pyrelvis
Pyrelvis is a simple Python library for visualizing binary relations.
Installation
Pyrelvis depends on Pycairo
Installing Pycairo requires pkg-config and cairo including its headers.
Ubuntu/Debian: sudo apt install libcairo2-dev pkg-config python3-dev
macOS/Homebrew: brew install cairo pkg-config
Arch Linux: sudo pacman -S cairo pkgconf
Fedora: sudo dnf install cairo-devel pkg-config python3-devel
openSUSE: sudo zypper install cairo-devel pkg-config python3-devel
After that use pip to install pyrelvis
pip install pyrelvis
Usage
# Simple
from pyrelvis import rel_to_svg
path = "out.svg"
# Relations are expressed as sets of tuples
relation = {(1,2), (2,4), (1,1), (3,2)}
# At least min_nodes nodes are displayed
rel_to_svg(path, relation, min_nodes=4)# With custom configuration
from pyrelvis import RelationPresenter
path = "out.svg"
relation = {(1,2), (2,4), (1,1), (3,2)}
presenter = RelationPresenter(
path,
width=700,
radius=280,
font_size=28,
line_width=2,
arrow_angle=160,
arrow_length=20
)
# At least min_nodes are displayed
presenter.print(relation, min_nodes=4)
presenter.close()Example Output
Using standard settings
Using custom settings
Contributing
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
Please make sure to update tests as appropriate.
