v1.0.0

ForceAtlas2 v1.0.0

Major release with full feature parity to Gephi ForceAtlas2.

New Features

• N-dimensional layout — dim parameter supports 2D, 3D, and beyond
• Anti-collision — adjustSizes=True prevents node overlap (Gephi ForceFactory.java parity)
• Auto-tuning — ForceAtlas2.inferSettings(G) selects parameters from graph characteristics
• Edge weight processing — normalizeEdgeWeights (min-max to [0,1]) and invertedEdgeWeightsMode (w=1/w)
• NumPy vectorized backend — backend="vectorized" for 10-16x speedup without Cython
• Store positions — store_pos_as saves positions as node attributes in NetworkX/igraph
• Node sizes — size_attr reads sizes from graph attributes for anti-collision
• Dual Cython architecture — Node2D (scalar C fields) + NodeND (list fields) for full 2D performance parity with v0.9.0

Bug Fixes

• Anti-collision division-by-zero when nodes exactly touch (distance=0)
• Coincident nodes producing NaN in vectorized repulsion
• float32 precision loss in NetworkX sparse conversion
• Suppress spurious RuntimeWarning in vectorized gravity for origin nodes

Quality

• 190 unit/integration tests, 100% coverage
• 8 benchmarks
• All force formulas verified against Gephi Java source and the original paper
• MkDocs documentation site

Install

pip install fa2==1.0.0

For Cython speedup:

pip install cython
pip install fa2==1.0.0 --no-binary fa2

Full Changelog: v0.9.0...v1.0.0