Adj2Lap                 Compute graph Laplacian matrix from graph
                        adjacency matrix
L2L.normalized          Compute normalized version of graph Laplacian
                        matrix
mdpeer                  mdpeer: Methods for graph-constrained
                        regression with enhanced regularization
                        parameters selection
riPEER                  Graph-constrained regression with penalty term
                        being a linear combination of graph-based and
                        ridge penalty terms
riPEERc                 Graph-constrained regression with addition of a
                        small ridge term to handle the
                        non-invertibility of a graph Laplacian matrix
vizu.mat                Visualize matrix data in a form of a heatmap,
                        with continuous values legend
vizu.mat.factor         Visualize matrix data in a form of a heatmap,
                        with categorical values legend
vrPEER                  Graph-constrained regression with
                        variable-reduction procedure to handle the
                        non-invertibility of a graph-originated penalty
                        matrix
