Chalc is a Python package to compute chromatic Delaunay filtrations from labelled datasets in Euclidean space. Chromatic Delaunay filtrations are a family of combinatorial objects that capture spatial relations among the classes of a labelled dataset. You can find more details on the math behind chromatic Delaunay filtrations in the following papers:
Chromatic Alpha Complexes
Morse Theory for Chromatic Delaunay Triangulations
For instructions on how to install and use chalc, read the documentation.
Important
Since the release of NumPy 2.0, versions of chalc older than 2.0.0 won't work correctly. This is due to a bug in these package versions related to dependency specification. If you are using an older version of chalc, please make sure to install a compatible version of NumPy (≥ 1.24.2 and < 2.0.0).