The trace's groups, in navigation order.
Row label for the one-group and the several-group case.
Label used when the chart holds a single box.
Label used when the chart holds several boxes.
Reads the value being compared from a group.
True when the candidate value outranks the current winner.
The summary row, or a missing row when no group has the value.
Builds one range row of a box-shaped trace's description summary: the winning value across groups, named with the group it belongs to once there is more than one group to tell apart.
Every box carries its own ends, so a single chart-wide pair reads as though a chart of several boxes had one minimum and one maximum. Attributing each extreme to its group is what makes the summary answer "which box?" — the per-group breakdown itself is left to the data table below it.
Both halves of the row — which label to use and whether the value carries a group name — hang off the one
groupedcheck here, so a row can never pair a lone-group label with a group-suffixed value.Boxes tie on an end readily, several bottoming out at the same floor being the ordinary case, and
beatsis strict, so the earliest group in navigation order wins: the group named is the first one the user reaches.