| image.tissot_raster | Compute distortion surfaces on a regular grid |
| indicatrix | Build Tissot indicatrix objects |
| plot.indicatrix | Plot an indicatrix |
| plot.indicatrix_list | Plot a list of indicatrixes |
| plot.tissot_raster | Compute distortion surfaces on a regular grid |
| tissot | Compute Tissot indicatrix properties |
| tissot_abline | Plot world coastline on a projected map |
| tissot_get_proj | Get or set the current plot projection |
| tissot_map | Plot world coastline on a projected map |
| tissot_raster | Compute distortion surfaces on a regular grid |
| tissot_set_proj | Get or set the current plot projection |
| tissot_unproject | Unproject coordinates to geographic (lon/lat) CRS |
| ti_ellipse | Generate ellipse coordinates for an indicatrix |
| world | World coastline |
| [.indicatrix_list | Subset an indicatrix_list |