仪表盘 / 极坐标
仪表盘
type: 'gauge'带指针的角度转速表样式仪表盘。支持绘制带以表示彩色范围。
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
仪表盘
编辑 · JSON
数据格式
[{ y: number }]（单个值），yAxis { min, max }
数据结构
传入图表的 JSON——可直接放进你的 series。
data: [{ y: 72 }]示例
import KatuCharts from 'katucharts.js';
KatuCharts.chart('container', {
chart: { type: 'gauge' },
yAxis: { min: 0, max: 100 },
series: [{ name: '负载', data: [72] }]
});类型特定选项
| 选项 | 描述 |
|---|---|
yAxis.min / yAxis.max | 仪表盘范围（必需）。 |
yAxis.plotBands | 彩色弧形线段{ from、to、color }。 |
dial / pivot / pane / wrap | 指针、轮毂、弧形范围和换行行为。 |
变体
彩色刻度区
用 yAxis.plotBands 将表盘分成多个区段。
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: '负载', data: [72] }]
});Common errors
- Why does my 仪表盘 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 仪表盘 chart in JavaScript?
- Install with `npm install katucharts.js`, then call KatuCharts.chart(container, { chart: { type: 'gauge' }, series: [...] }).
- Why does my 仪表盘 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.