Calculate entropy for a single cell based on its neighbors — calculate_entropy_for

This internal helper function extracts the expression matrix of a cell's neighbors and computes entropy for each gene using the specified estimator.

calculate_entropy_for_cell(cell_name, mat, seu, nn_list = NULL, nn.name = NULL)

Arguments

cell_name: Character. Name of the cell to compute entropy for.
mat: Matrix. Expression matrix (genes x cells).
seu: Seurat object.
nn_list: Optional list mapping cell names to neighbor indices or names.
nn.name: Optional character. If neighbors are already present in the Seurat object, this specifies the name of the neighbor graph to use (e.g. `"SCT"` or `"RNA"`).

A numeric vector of entropy values for each gene.