Module treemap 

StatTreemap: squarified treemap layout (Bruls, Huizing & van Wijk).

Each input row with a positive weight becomes one tile whose area is proportional to that weight. With a subgroup mapping, groups are laid out first (area = their summed weight) and each group’s rows are tiled inside its rectangle (inset by group_padding). The layout fills [0, aspect] × [0, 1].

Output: one row per tile (part = "tile", every input column carried through, xmin/xmax/ymin/ymax, area = weight) followed — when subgroups are mapped — by one row per group (part = "group", its rectangle, subgroup, area = group total, fill = its first member’s; other columns Na).

Structs

StatTreemap

Squarified treemap stat behind GeomTreemap.