Support for Sub-Categories on X-Axis for Grouping Fields in Stacked-Grouped Bar Chart.

[Krishna-Chidrawar]

Description

I am using stacked-grouped bar charts and need the ability to introduce sub-categories on the X-axis for better grouping. Currently, while we can group series using the group property, the X-axis does not support displaying these groups as hierarchical sub-categories.

For example, I would like to categorize data under broader groups like "Sales" and "Production" while showing subcategories such as "Q1" and "Q2" within each group as shown in the image . Currently, the X-axis treats all categories at the same level, making it harder to differentiate groups visually.

I have attached an image to illustrate this use case. It demonstrates how hierarchical grouping can be added to the X-axis for better clarity.

This functionality should be supported since its absence feels like a limitation.

Steps to Reproduce

1. Create a stacked-grouped bar chart
2. In it use the group property in series to group the data For ex: "Sales" and "Production." in my case.

Expected Behavior :

The X-axis should visually distinguish broader groups (e.g., "Onine Advertising" and "Sales Training") and show subcategories (e.g., "Sales", "Production") nested under them.

Actual Behavior :

The X-axis treats all subcategories at the same level, making it harder to distinguish the groups.

Screenshots

• I have added the sub-labels here to illustrate the intended depiction.

Reproduction Link :https://codepen.io/Krishna-Chidrawar-the-reactor/pen/YPzxeOM