其他
韦恩图
type: 'venn'韦恩图，显示集合交集和重叠。
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
韦恩图
编辑 · JSON
数据格式
{ sets: string[], value: number, name? }
数据结构
传入图表的 JSON——可直接放进你的 series。
data: [
{ sets: ['A'], value: 12, name: 'Frontend' },
{ sets: ['B'], value: 9, name: 'Backend' },
{ sets: ['A', 'B'], value: 4, name: 'Full-stack' }
]示例
import KatuCharts from 'katucharts.js';
KatuCharts.chart('container', {
chart: { type: 'venn' },
series: [{
data: [
{ sets: ['A'], value: 12, name: 'Frontend' },
{ sets: ['B'], value: 9, name: 'Backend' },
{ sets: ['A', 'B'], value: 4, name: 'Full-stack' }
]
}]
});类型特定选项
| 选项 | 描述 |
|---|---|
（自动重叠计算） | 2–3路交集自动计算。 |
变体
三集合重叠
三个圆，包含每对交集以及三重交集。
KatuCharts.chart('container', {
chart: { type: 'venn' },
series: [{ data: [
{ sets: ['A'], value: 12, name: 'Frontend' },
{ sets: ['B'], value: 9, name: 'Backend' },
{ sets: ['C'], value: 7, name: 'DevOps' },
{ sets: ['A','B'], value: 4 },
{ sets: ['A','B','C'], value: 1 }
] }]
});Common errors
- Why does my 韦恩图 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 韦恩图 chart in JavaScript?
- Install with `npm install katucharts.js`, then call KatuCharts.chart(container, { chart: { type: 'venn' }, series: [...] }).
- Why does my 韦恩图 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.