流向
桑基图
type: 'sankey'流向图，显示节点之间的数量。节点从from/to字段隐式创建。
编辑右侧的JSON并按Run（或⌘/Ctrl + Enter）——数据、标题、类别和颜色全部实时更新。
实时
桑基图
编辑 · JSON
数据格式
{ from: string, to: string, weight: number }
数据结构
传入图表的 JSON——可直接放进你的 series。
data: [
{ from: '主页', to: '产品', weight: 800 },
{ from: '主页', to: 'Blog', weight: 300 },
{ from: '产品', to: '购物车', weight: 500 }
]示例
import KatuCharts from 'katucharts.js';
KatuCharts.chart('container', {
chart: { type: 'sankey' },
series: [{
data: [
{ from: '主页', to: '产品', weight: 800 },
{ from: '主页', to: 'Blog', weight: 300 },
{ from: '产品', to: '购物车', weight: 500 }
]
}]
});类型特定选项
| 选项 | 描述 |
|---|---|
nodeWidth / nodePadding | 节点条宽度（20）/ 垂直间距（10）。 |
linkOpacity / linkColorMode | 链接不透明度（0.5）/ 'from' | 'to' | 'gradient'。 |
curveFactor / levels | 链接曲率 / 每深度配置。 |
变体
渐变连接
linkColorMode: 'gradient' 让每条连接从源色渐变到目标色。
KatuCharts.chart('container', {
chart: { type: 'sankey' },
series: [{
linkColorMode: 'gradient',
data: [
{ from: 'Home', to: '产品', weight: 800 },
{ from: '产品', to: '购物车', weight: 500 }
]
}]
});Common errors
- Why does my 桑基图 chart render as a line chart?
- The chart type was not registered. KatuCharts logs "KatuCharts: unknown series type "<type>", falling back to line" and draws a line chart rather than throwing. Import the module the type belongs to — for example `import 'katucharts.js/bio';` — before creating the chart.
- Why do I get "Cannot read properties of null (reading 'appendChild')"?
- The container element does not exist when the chart is created. Create the chart after the element is in the DOM: in React that means inside useEffect, not during render.
- Why is the chart rendering with zero height?
- The container has no height. A div with no content collapses to zero. Give it a height in CSS, or pass `chart: { height: 400 }` in the options.
FAQ
- How do I create a 桑基图 chart in JavaScript?
- Install with `npm install katucharts.js`, then call KatuCharts.chart(container, { chart: { type: 'sankey' }, series: [...] }).
- Why does my 桑基图 chart render as a line chart?
- The chart type was not registered. KatuCharts logs "KatuCharts: unknown series type "<type>", falling back to line" and draws a line chart rather than throwing. Import the module the type belongs to — for example `import 'katucharts.js/bio';` — before creating the chart.
- Why do I get "Cannot read properties of null (reading 'appendChild')"?
- The container element does not exist when the chart is created. Create the chart after the element is in the DOM: in React that means inside useEffect, not during render.
- Why is the chart rendering with zero height?
- The container has no height. A div with no content collapses to zero. Give it a height in CSS, or pass `chart: { height: 400 }` in the options.