饼图 / 层级
饼图
type: 'pie'分成比例切片的圆形图（无坐标轴）。支持切片偏移、自定义开始/结束角度和连接器数据标签。
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
饼图
编辑 · JSON
数据格式
{ name, y, color?, sliced? } · [['name', value]]
数据结构
传入图表的 JSON——可直接放进你的 series。
data: [
{ name: 'A', y: 45 },
{ name: 'B', y: 30 },
{ name: 'C', y: 25 }
]示例
import KatuCharts from 'katucharts.js';
KatuCharts.chart('container', {
chart: { type: 'pie' },
series: [{
data: [
{ name: 'A', y: 45 },
{ name: 'B', y: 30 },
{ name: 'C', y: 25 }
]
}]
});类型特定选项
| 选项 | 描述 |
|---|---|
innerSize | 内半径（0 =完整饼图，'50%' =环形图）。 |
size / center | 饼图半径 / 中心['50%','50%']。 |
startAngle / endAngle | 弧形范围（度数）。 |
slicedOffset / borderRadius / depth | 切片偏移、圆角切片、伪3D深度。 |
变体
百分比数据标签
用带引线的标签显示每个扇区的名称和百分比。
KatuCharts.chart('container', {
chart: { type: 'pie' },
series: [{
dataLabels: { enabled: true, format: '{point.name}: {point.percentage:.0f}%' },
data: [
{ name: 'Product A', y: 35, sliced: true },
{ name: 'Product B', y: 25 }
]
}]
});下钻
点击扇区下钻查看其细分。
KatuCharts.chart('container', {
chart: { type: 'pie' },
drilldown: {
series: [
{ id: 'emea', name: 'EMEA',
data: [{ name: 'UK', y: 18 }, { name: 'Germany', y: 14 }] }
]
},
series: [{
data: [
{ name: 'EMEA', y: 42, drilldown: 'emea' },
{ name: 'APAC', y: 25, drilldown: 'apac' }
]
}]
});Common errors
- Why does my 饼图 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 饼图 chart in JavaScript?
- Install with `npm install katucharts.js`, then call KatuCharts.chart(container, { chart: { type: 'pie' }, series: [...] }).
- Why does my 饼图 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.