How to Create a Bubble Chart

Data Format

One row per bubble.

Label	X	Y	Z (bubble size)	Group
Acme Corp	12	45	8	Region A
Globex	18	30	15	Region B
Initech	9	52	4	Region A

Label (optional): text shown next to the bubble.
X, Y (required, numeric): point position. A row with a missing or non-numeric X or Y is dropped.
Z (bubble size) (required, ≥ 0, to size every point): once any row has a Z value, the whole chart switches to bubble mode and sizes every point relative to the largest Z in the data. Rows without a Z value render at radius 0 (invisible).
Group (optional): assigns a category. Drives bubble color and the legend, independent of size.

Every part of the chart maps to a section in the style panel.

Every point renders as a bubble sized by its Z value, relative to the largest Z in the data.

Color - single color for all bubbles, or a per-group color row once the Group column is used.
Bubble size - a multiplier scaling every bubble relative to their Z value.

Shows the Label column text next to each bubble. Can be hidden entirely.

Shows the Z value inside each bubble. Only appears if the bubble is large enough to fit the text.

X and Y are styled independently, each with its own range, tick count, color, and visibility.

X and Y gridlines share one color and thickness setting, but can be shown or hidden independently.

The numbers along each axis share one color and font, but number formatting is set independently per axis.

Appears automatically once any bubble has a Group value. Independent of bubble size. Can be hidden independently of the grouping itself.

Position - Top, Bottom, Right, or Direct (label placed next to each group's points instead of a separate legend box).
Color - legend text color.
Font / Font Size - legend text styling.