How do I create a medidor chart in JavaScript?

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

Why does my medidor chart render as a line chart?

The chart type was not registered. KatuCharts logs "KatuCharts: unknown series 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.

Medidor / Polar

Medidor

type: 'gauge'

Medidor de estilo velocímetro angular com agulha. Suporta faixas de plotagem para intervalos coloridos.

Edite o JSON à direita e pressione Executar (ou ⌘/Ctrl + Enter) — dados, títulos, categorias e cores se atualizam ao vivo.

Ao Vivo

Medidor

Editar · JSON

Formato de dados

[{ y: number }] (valor único), yAxis { min, max }

Estrutura de dados

O JSON que você passa dentro do gráfico — coloque direto na sua series.

data: [{ y: 72 }]

Exemplo

import KatuCharts from 'katucharts.js';

KatuCharts.chart('container', {
  chart: { type: 'gauge' },
  yAxis: { min: 0, max: 100 },
  series: [{ name: 'Carga', data: [72] }]
});

Opções específicas do tipo

Opção	Descrição
`yAxis.min / yAxis.max`	Intervalo do medidor (obrigatório).
`yAxis.plotBands`	Segmentos de arco coloridos { from, to, color }.
`dial / pivot / pane / wrap`	Agulha, hub, intervalo de arco e comportamento de envolvimento.

Variações

Faixas coloridas

Divida o mostrador em zonas com yAxis.plotBands.

KatuCharts.chart('container', {
  chart: { type: 'gauge' },
  yAxis: {
    min: 0, max: 100,
    plotBands: [
      { from: 0,  to: 60,  color: '#2F6B5E' },
      { from: 60, to: 85,  color: '#C9762B' },
      { from: 85, to: 100, color: '#B43417' }
    ]
  },
  series: [{ name: 'Carga', data: [72] }]
});

Common errors

Why does my medidor 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 medidor chart in JavaScript?: Install with `npm install katucharts.js`, then call KatuCharts.chart(container, { chart: { type: 'gauge' }, series: [...] }).
Why does my medidor 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.

Opções comuns (color, visible, marker, dataLabels, animation, events, zones…) se aplicam a cada tipo — veja Configuração → series. Veja renderizado na galeria.