饼图 / 层级
矩形树图
type: 'treemap'按值调整大小的矩形。支持平铺算法、层级级别和钻取节点。
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
矩形树图
编辑 · JSON
数据格式
{ name, value, color? } · { id, parent, name, value }
数据结构
传入图表的 JSON——可直接放进你的 series。
data: [
{ name: 'Media', value: 80 },
{ name: 'Docs', value: 45 },
{ name: 'Code', value: 60 }
]示例
import KatuCharts from 'katucharts.js';
KatuCharts.chart('container', {
chart: { type: 'treemap' },
series: [{
data: [
{ name: 'Media', value: 80 },
{ name: 'Docs', value: 45 },
{ name: 'Code', value: 60 }
]
}]
});类型特定选项
| 选项 | 描述 |
|---|---|
layoutAlgorithm | 'squarified' | 'binary' | 'dice' | 'slice' | 'sliceDice'。 |
levels | 每级样式数组。 |
colorByPoint / allowDrillToNode | 每个项目的唯一颜色 / 点击钻取。 |
变体
下钻到节点
使用 id/parent 嵌套数据并配合 allowDrillToNode——点击父节点放大。
KatuCharts.chart('container', {
chart: { type: 'treemap' },
series: [{
allowDrillToNode: true, colorByPoint: true,
data: [
{ id: 'media', name: 'Media' },
{ id: 'm1', parent: 'media', name: 'Video', value: 48 },
{ id: 'm2', parent: 'media', name: 'Audio', value: 22 }
]
}]
});Common errors
- Why does my 矩形树图 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 矩形树图 chart in JavaScript?
- Install with `npm install katucharts.js`, then call KatuCharts.chart(container, { chart: { type: 'treemap' }, series: [...] }).
- Why does my 矩形树图 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.