dosubot[bot] commented on issue #43084: URL: https://github.com/apache/superset/issues/43084#issuecomment-5264100369
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Inside `getColorFormatters`, it builds the reference value distribution as `data.map(row => row[config.column!] as number)` [[1]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset-frontend/packages/superset-ui-chart-controls/src/utils/getColorFormatters.ts#L209-L213). For the `Comparator.None` (color scale) case, it then uses `Math.min(...allValues)` / `Math.max(...allValues)` from that raw distribution to compute opacity [[2]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset-frontend/packages/superset-ui-chart-controls/src/utils/getColorFor matters.ts#L91-L99). But at render time, the actual cell value comes from `pivotData.getAggregator(rowKey, colKey).value()` — an **aggregated** value [[3]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset-frontend/plugins/plugin-chart-pivot-table/src/react-pivottable/TableRenderers.jsx#L707-L708). Since the raw row distribution can differ significantly from the aggregated cell distribution (especially with subtotals or when many raw rows feed one cell), the opacity interpolation will be off. 2. **Formatter matching uses dimension labels, not metric names.** The render logic builds `keys = [...rowKey, ...colKey]` and then matches formatters via `formatter.column === key` [[4]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset-frontend/plugins/plugin-chart-pivot-table/src/react-pivottable/TableRenderers.jsx#L710-L726). These `keys` are the dimension *values* (row/column header strings), not the metric column name. This can cause formatters to either miss the intended metric or match incorrectly when a dimension value string happens to equal a configured column name. **To fix this**, the color scale's reference min/max should be computed from the set of *aggregated cell values* (post-pivot), and the formatter matching should compare against the metric column name rather than dimension header values. **Issue 2: Row label truncation** This is a genuine feature gap. The `.pvtRowLabel` class on row header `<th>` elements has no `max-width`, `overflow: hidden`, or `text-overflow: ellipsis` applied [[5]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset-frontend/plugins/plugin-chart-pivot-table/src/react-pivottable/TableRenderers.jsx#L620-L654), and no chart control for configuring truncation exists in the [control panel](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset-frontend/plugins/plugin-chart-pivot-table/src/plugin/transformProps.ts#L86-L109). Implementing this would require adding a form control (e.g., a max-width setting), applying the appropriate CSS (`max-width`, `overflow: hidden`, `text-overflow: ellipsis`, `white-space: nowrap`), and adding a `title` attribute on the `<th>` for a hover tooltip. Both issues would benefit from being tracked as separate tickets — one as a bug fix and one as a feature request — to make them easier to pick up for contribution. <!-- Dosu Comment Footer --> *To reply, just mention [@dosu](<https://go.dosu.dev/dosubot?utm_source=github&utm_medium=bot-comment&utm_campaign=github-comment-footer-20260415&utm_content=reply-with-mention&utm_term=apache%2Fsuperset>).* --- Docs are dead. Just use [Dosu](https://dosu.dev?utm_source=github&utm_medium=bot-comment&utm_campaign=github-comment-footer-20260415&utm_content=static-docs-tagline&utm_term=apache%2Fsuperset). 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