Pre-Export Validation Gate
Starting 2026-07-27, DataVizForge runs a structural validation pass on every chart before allowing export. The gate catches three common issues that previously produced broken or misleading output files.
What Gets Checked
- Empty data series — A chart with a named series that has zero data points is flagged
- Axis range mismatch — When the Y-axis max is below the actual data max, the chart would silently clip values; now flagged
- Orphaned legends — Legend entries that reference a series no longer present in the chart are detected
How It Works
The validation runs client-side in under 200 ms for charts with fewer than 50 data points. Flagged issues appear as inline warnings beside the Export button. You can override the gate and export anyway, but the warnings are logged in the export metadata for downstream reviewers.
Why This Matters
Charts that reach stakeholders with clipped axes or phantom legends erode trust in the data pipeline. A 200 ms check at authoring time is cheaper than a retraction email after distribution.
Available now for all users. Questions or feedback: sapsap@qq.com