Generates the kNN graph — rs_sc

This function is a wrapper over the Rust-based generation of the approximate nearest neighbours.

Usage

rs_sc_knn(embd, knn_params, validate_index, verbose, seed)

Arguments

embd: Numerical matrix. The embedding matrix to use to generate the kNN graph.
knn_params: List. The kNN parameters defined by params_sc_neighbours().
validate_index: Boolean. If you want to validate the index via an exhaustive search in a subset of cells.
verbose: Integer. 0L - quiet; 1L - normal verbosity; 2L - detailed verbosity.
seed: Integer. Seed for reproducibility purposes.

Value

An integer matrix of N x k with the neighbour indices (0-indexed!), N being the number of cells and k the number of neighbours. Rows the search left short are padded by repeating their last neighbour.