| $.TRACK_META | Get meta data in the current track |
| cartesian_to_xy | Convert canvas coordinates to the data coordinates |
| current_spiral | Get current spiral object |
| current_spiral_vp | Viewport name of current spiral |
| current_track_index | Current track index |
| get_track_data | Get meta-data of a track |
| horizon_legend | Legend for the horizon chart |
| is_in_track | Test whether points are in a track |
| names.TRACK_META | Names of all supported meta data |
| n_tracks | Number of tracks |
| phylo_to_dendrogram | Convert a phylo object to a dendrogram object |
| polar_to_cartesian | Convert polar coordinates to catersian coordinates |
| print.TRACK_META | Print TRACK_META |
| set_current_track | Set current track |
| solve_theta_from_spiral_length | Get theta from given spiral lengths |
| spiral_arrow | Draw arrows in the spiral direction |
| spiral_axis | Draw axis along the spiral |
| spiral_bars | Add bars to a track |
| spiral_clear | Clear the spiral curve |
| spiral_dendrogram | Draw dendrogram |
| spiral_highlight | Highlight a section of the spiral |
| spiral_highlight_by_sector | Highlight a sector |
| spiral_horizon | Draw horizon chart along the spiral |
| spiral_info | Information of the current spiral |
| spiral_initialize | Initialize the spiral |
| spiral_initialize_by_gcoor | Initialize the spiral with genomic coordinates |
| spiral_initialize_by_time | Initialize the spiral from time objects |
| spiral_lines | Add lines to a track |
| spiral_opt | Global options |
| spiral_phylo | Draw phylogenetic tree |
| spiral_points | Add points to a track |
| spiral_polygon | Add polygons to a track |
| spiral_raster | Add image to a track |
| spiral_rect | Add rectangles to a track |
| spiral_segments | Add segments to a track |
| spiral_text | Add texts to a track |
| spiral_track | Add a new track or go to an existed track |
| spiral_xaxis | Draw axis along the spiral |
| spiral_yaxis | Draw y-axis |
| Subset.TRACK_META | Get meta data in the current track |
| TRACK_META | Get meta data in the current track |
| xy_to_cartesian | Convert data coordinates to the canvas coordinates |
| xy_to_polar | Convert data coordinates to polar coordinates |