Data Visualization UX for Dashboards
Chart selection, color semantics, and drill-down patterns for decision makers.
Nestlancer Editorial
Charts exist for decisions, not decoration. Wrong chart type hides trends and sends executives back to spreadsheets.
Chart selection
| Data goal | Chart |
|---|---|
| Trend over time | Line |
| Part of whole (few segments) | Stacked bar |
| Comparison across categories | Horizontal bar |
| Distribution | Histogram |
Avoid pie charts beyond 3–4 segments.
Color semantics
- Consistent meaning: green good, red bad—or brand palette with legend
- Colorblind-safe palettes (viridis, tol)
- Never rely on color alone—labels and patterns
Drill-down
Click bar → filtered table with export. Breadcrumb back to summary view.
Dashboard density
Executive summary top: 3 KPIs with sparklines. Detail tabs below for analysts.
Loading and empty
Skeleton charts beat spinners; explain empty ("No data until integration connects").
Dashboard UX is decision support—validate charts with one real user question each should answer.
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