Reference index / 추세·시간 차트
Multi-series Line Chart
Compares several series on a shared time axis.
Try the example
When to use it
Use when designing trends & time and selecting analytical visualizations.
Caveats and distinctions
Use direct labels or selective highlighting when many series overlap.
Implementation and classification
데이터 시각화 / 추세·시간 차트
Sources and verification status
https://vega.github.io/vega-lite/examples/
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