Analysis/_bmad-output/implementation-artifacts/4-3-dashboard-de-resultats-interactif.md

Story 4.3: Dashboard de Résultats Interactif

Status: review

Story

As a Julien (Analyst), I want to see the model results through interactive charts, so that I can easily diagnose the performance of my regression.

Acceptance Criteria

1. Results View: A new "Results" tab or page displays the output of the regression.
2. Metrics Cards: Key statistics (R², Adj. R², P-value, Sample Size) are shown in high-visibility cards with Shadcn UI.
3. Primary Chart: A "Real vs Predicted" scatter chart with a reference 45-degree line.
4. Diagnostic Chart: A "Residuals Distribution" histogram or "Residuals vs Fitted" plot.
5. Coefficient Table: A clean table showing each predictor, its coefficient, and its p-value (color-coded for significance < 0.05).

Tasks / Subtasks

• Visualization Development (AC: 1, 3, 4)
  • Create frontend/src/features/analysis/components/AnalysisResults.tsx.
  • Implement "Real vs Predicted" chart using Recharts.
  • Implement "Residuals" diagnostic chart.
• Data Integration (AC: 2, 5)
  • Update useGridStore to trigger the regression run and store analysisResults.
  • Build the metrics summary UI and coefficient table.

Dev Notes

• Feedback: Added visual error reporting in the UI if the regression fails.
• Charts: Used ScatterChart for real-vs-pred and AreaChart for residuals distribution.
• UX: Auto-switch to "Results" tab upon successful execution.

Project Structure Notes

• Created frontend/src/features/analysis/components/AnalysisResults.tsx.
• Integrated results state in frontend/src/store/use-grid-store.ts.
• Updated frontend/src/app/page.tsx with robust error handling.

References

• [Source: epics.md#Story 4.3]
• [Source: ux-design-specification.md#Design Directions]

Dev Agent Record

Agent Model Used

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Completion Notes List

• Implemented AnalysisResults component with responsive charts.
• Added visual indicators for statistical significance.
• Verified correct state management flow from configuration to results display.
• Improved error handling and user feedback during execution.

File List

• /frontend/src/features/analysis/components/AnalysisResults.tsx
• /frontend/src/store/use-grid-store.ts
• /frontend/src/app/page.tsx
• /frontend/src/features/analysis/components/AnalysisConfiguration.tsx