ECharts Theme River
A theme-river (a.k.a. stream graph) where the total volume flows across time with each category's stripe widening or narrowing as its share waxes and wanes. ECharts' themeRiver series uses a smooth area baseline that keeps the silhouette legible even with eight or ten parallel st
Template details
- chart
- theme-river
- stream
- stacked
- time-series
- echarts
When to use this template
This visualization effectively reveals how the composition of a fixed total changes over time, making shifts in the relative proportions of constituent categories immediately apparent. Analysts use it to track the evolution of market share, resource allocation, or attention distribution across distinct segments, identifying periods where individual categories gain or lose prominence within the whole.
- Time-series data with a continuous, ordered time axis.
- Multiple distinct categories, typically 5 to 15.
- Values representing parts of a whole at each time step.
- Focus on relative proportions and their shifts over time.
- Data where categories sum to a meaningful total at each point.
- Suitable for long durations with many time points.