| calculate_angle | Calculate angle coordinates for circular layouts |
| calculate_branch_mid | Branch mid-point coordinates |
| clade_geometry | One call instead of three. Returns the left and right boundary angles of the clade subtree, the largest distance from 'node' to any node inside the clade, and the largest distance from the root of the whole tree to any node - the two radii the clade label / hilight code needs. |
| Date2decimal | convert Date to decimal format, eg "2014-05-05" to "2014.34" |
| decimal2Date | convert decimal format to Date, eg "2014.34" to "2014-05-05" |
| getXcoord2 | x coordinates from an edge list |
| getYcoord | y coordinates for tips |
| get_layout | Read the layout recorded on a layout result |
| layout_names | Layout names accepted by 'tree_layout()' |
| re_assign_ycoord_df | Re-assign y coordinates |
| tree_layout | Compute node coordinates for a tree |