| esf | Eigenvector spatial filtering |
| meigen | Extraction of Moran's eigenvectors |
| meigen_f | Fast approximation of Moran's eigenvectors |
| plot_qr | Plot quantile regression coefficients estimated by SF-UQR |
| resf | Random effects eigenvector spatial filtering |
| resf_qr | Spatial filter unconditional quantile regression |
| resf_vc | RE-ESF with spatially varying coefficients |