| adjmatrix | Weighted Adjacency Matrix |
| gextrema | Finding Local Extrema of a Graph Signal |
| gfdecomp | Graph Fourier Decomposition |
| gftplot | Plot of the absolute values of the graph Fourier coefficients vs the eigenvalues |
| ginterpolating | Interpolation of a Graph Signal |
| gplot | Plot of a Graph Signal |
| gsignal | Graph Object with a Signal |
| gsmoothing | Smoothing a Graph Signal |
| gsubway | Seoul Subway Ridership Data |
| sgemd | Statistical Graph Empirical Mode Decomposition |