Venn

Edita el JSON a la derecha y presiona Ejecutar (o ⌘/Ctrl + Intro) — los datos, títulos, categorías y colores se actualizan en vivo.

Formato de datos

Estructura de datos

El JSON que pasas dentro del gráfico — colócalo directamente en tu series.

data: [
  { sets: ['A'], value: 12, name: 'Frontend' },
  { sets: ['B'], value: 9, name: 'Backend' },
  { sets: ['A', 'B'], value: 4, name: 'Full-stack' }
]

Ejemplo

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' }
    ]
  }]
});

Opciones específicas del tipo

Variaciones

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 venn 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 venn chart in JavaScript?

Install with `npm install katucharts.js`, then call KatuCharts.chart(container, { chart: { type: 'venn' }, series: [...] }).

Why does my venn 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.