笛卡尔坐标
平滑曲线图
type: 'spline'使用Catmull-Rom曲线（α=0.5）的平滑插值线。与折线图相同的API，但曲线自然地通过每个点。
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
平滑曲线图
编辑 · JSON
数据格式
与折线图相同
数据结构
传入图表的 JSON——可直接放进你的 series。
series: [
{ name: '2024', data: [6, 8, 12, 17, 21, 25] }
]示例
import KatuCharts from 'katucharts.js';
KatuCharts.chart('container', {
chart: { type: 'spline' },
series: [{ name: '2024', data: [6, 8, 12, 17, 21, 25] }]
});类型特定选项
| 选项 | 描述 |
|---|---|
（继承所有折线图选项） | marker、dashStyle、zones、step、connectNulls等。 |
变体
数据标签
用格式字符串在曲线上方显示每个点的数值。
KatuCharts.chart('container', {
chart: { type: 'spline' },
series: [{
name: 'NPS', data: [38, 45, 42, 58, 64],
marker: { enabled: true },
dataLabels: { enabled: true, format: '{point.y}' }
}]
});Common errors
- Why does my 平滑曲线图 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 平滑曲线图 chart in JavaScript?
- Install with `npm install katucharts.js`, then call KatuCharts.chart(container, { chart: { type: 'spline' }, series: [...] }).
- Why does my 平滑曲线图 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.