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mapio
442 Stars 50 Forks GNU General Public License v3.0 77 Commits 4 Opened issues

Description

A tool to create animated graph visualizations, based on graphviz.

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GraphvizAnim

Build Status Binder DOI

GraphvizAnim is a tool to create simple animated graph visualizations; it is just a proof of concept, aimed mainly at teaching purposes. It is based on Graphviz for the graph rendering part and on ImageMagick for the animated gif generation. You can run the heap sort animation on-line using binder.

A graph animation is just a sequence of steps, a step is in turn one or more actions such as: add, hilight, label, unlabel or remove a node, and add, hilight, or remove an edge. Animations can be built by invoking suitable methods of a

gvanim.Animation
object (in a Python program), or by parsing a simple text file (that, in turn, can be generated by a program in any language).

The examples folder contains few instances of such approaches. After installing the package with

python setup.py install
, or using
pip install GraphvizAnim

you can generate an animated depth first visit (in a 3-regular random graph of 6 nodes) by running

python examples/dfv.py

or you can generate the simple animation described in simple.txt as

python -m gvanim examples/simple.txt simple

You can generate an Erdős–Rényi graph (with 10 nodes and edge probability 1/10) by running

cd examples
gcc -o er er.c
./er | python -m gvanim er

Finally, you can obain an interactive visualization of the heap sort algorithm using Jupyter by running

cd examples
jupyter notebook heapsort.ipynb

and running all the cells in order; or you can give a try to binder and watch the above animation actually running on-line.

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