Reference index / 행렬·시간·공간 밀도
2D Histogram
Bins two numerical axes and shows observation counts per cell.
When to use it
Use when designing matrices & density and selecting analytical visualizations.
Caveats and distinctions
Summarizes dense scatterplots; axes represent numerical intervals.
Implementation and classification
데이터 시각화 / 행렬·시간·공간 밀도
Sources and verification status
https://vega.github.io/vega-lite/examples/
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