Asphericity

The Asphericity analysis reports how far a selected group deviates from a spherical shape along a path or trajectory. It is a compact way to monitor shape anisotropy without reducing the description to a single distance.

Adding the plot

1. Open Path Analyzer.
2. Choose Asphericity in Observable.
3. Choose a Path.
4. Define the Group to analyze.
5. Click Add Time Series or Add Histogram.

Inputs

• One atom-containing selection is required.

Views

• Time series: follow the shape descriptor along the path.
• Histogram: inspect the range of sampled values.

Tip

• Use asphericity when radius of gyration alone is too coarse.
• Pair it with Radius of gyration and Shape parameter for a fuller picture of global shape changes.