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hailin dc6ac54c86 feat: client-side chart export (PNG/JPG/SVG/PDF/Excel/PPT/HTML) 
Replaced backend export polling with direct browser-side export:
- PNG/JPG: ECharts getDataURL() with configurable pixelRatio
- SVG: ECharts SVG renderer output
- PDF: jsPDF with chart images (dynamic import)
- Excel: SheetJS json_to_sheet (dynamic import)
- PPT: PptxGenJS with chart slides (dynamic import)
- HTML: Standalone page with ECharts CDN + inline options
- Template: JSON config export

Added global ECharts instance registry for export access.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 		2026-04-05 04:57:03 -07:00
backend fix: use Response class for 204 DELETE routes 2026-04-05 01:07:55 -07:00
docs feat: DataViz Pro full-stack data visualization platform 2026-04-04 23:20:12 -07:00
frontend feat: client-side chart export (PNG/JPG/SVG/PDF/Excel/PPT/HTML) 2026-04-05 04:57:03 -07:00
.gitignore feat: DataViz Pro full-stack data visualization platform 2026-04-04 23:20:12 -07:00
README.md feat: DataViz Pro full-stack data visualization platform 2026-04-04 23:20:12 -07:00

README.md

DataViz Pro

Data visualization platform for statistical analysis and chart rendering.