Get feature loading from an expression matrix — get_feature_loading • Starlng

This function calculates the feature loading of an expression matrix using PCA.

Usage

get_feature_loading(expr_matrix, npcs = 30, approx = FALSE, ...)

Arguments

expr_matrix: The gene by cell expression matrix to be used. It is expected that the matrix is already normalized and scaled.
npcs: The number of principal components to be used. Defaults to 30.
approx: Logical indicating if deterministic PCA (with prcomp) or approximate PCA (with irlba) should be used. Defaults to FALSE.
...: Aditional parameters passed to the PCA function.

Value

A gene by npcs matrix containing the feature loading.