connected_images¶
- ifermi.analysis.connected_images(fractional_vertices, tol=1e-05)[source]¶
Find the images a set of vertices is connected to.
Note: This function expects the vertices to only belong to a single connected mesh, and the vertices should cover a 3x3x3 supercell, where the coordinates from -0.5 to 0.5 indicate the center image.
- Parameters:
fractional_vertices (
ndarray) – A (n, 3) float array of the vertices in the isosurface in fractional coordinates.tol – A tolerance for evaluating whether two vertices are equivalent.
- Return type:
- Returns:
A (n, 3) int array of the images across which the mesh is connected periodically.