X axis
| Setting | Description |
|---|---|
| Show axis | Toggle the X axis on or off |
| Title | Custom axis label — leave blank to hide the axis title |
| Grid lines | Toggle grid lines perpendicular to the X axis |
| Labels | Toggle axis tick labels |
| Label angle | Rotate axis labels (useful for long category names) |
| Label format | Number or date format applied to axis labels |
Y axis (left)
| Setting | Description |
|---|---|
| Show axis | Toggle the Y axis on or off |
| Title | Custom axis label |
| Grid lines | Toggle horizontal grid lines |
| Labels | Toggle axis tick labels |
| Label format | Number format applied to axis labels (e.g. $,.0f for currency) |
| Min / Max | Override the axis scale minimum and maximum values |
Dual Y axis (right axis)
Add a second Y axis on the right side of the chart to plot a series on a different scale. This is useful for combining measures with different units or magnitudes — for example, showing order count on the left axis and average order value on the right. To use the right axis:- In the Series configuration for a specific series, change the Y axis assignment from Left to Right.
- The right axis settings appear in the Style tab — configure its title, labels, and scale independently from the left axis.
Reference lines
Add horizontal reference lines to mark a target, threshold, or benchmark value. Reference lines appear at a fixed Y value across the full width of the chart. To add a reference line:- In the Y axis section of the Style tab, click Add reference line.
- Set the Value — the Y position of the line.
- Optionally set a Label that appears next to the line.
- Configure Color and Style (solid, dashed, or dotted).
Reference lines are only available on the left Y axis. For right-axis reference lines, use a custom Vega-Lite spec.