笛卡尔坐标
散点图
type: 'scatter'X/Y点云，可配置的标记符号，无连接线。支持抖动以分离重叠的点。
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
散点图
编辑 · JSON
数据格式
[[x, y], …] · [{ x, y, name?, color? }]
数据结构
传入图表的 JSON——可直接放进你的 series。
data: [
[2, 35],
[4, 52],
[6, 61],
[8, 75]
]示例
import KatuCharts from 'katucharts.js';
KatuCharts.chart('container', {
chart: { type: 'scatter' },
series: [{ name: 'Nodes', data: [[2, 35], [4, 52], [6, 61], [8, 75]] }]
});类型特定选项
| 选项 | 描述 |
|---|---|
marker.symbol | 'circle'、'square'、'diamond'、'triangle'、'triangle-down'、'cross'。 |
marker.radius | 点大小（默认4）。 |
jitter | { x, y }偏移以分离重叠的点。 |
变体
按系列分符号
为每个系列赋予各自的标记符号，以区分重叠的点云。
KatuCharts.chart('container', {
chart: { type: 'scatter' },
series: [
{ name: 'Group I', marker: { symbol: 'circle' }, data: [[2, 3], [3, 4], [4, 5]] },
{ name: 'Group II', marker: { symbol: 'triangle' }, data: [[6, 7], [7, 8], [8, 8.6]] }
]
});Common errors
- Why does my 散点图 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 散点图 chart in JavaScript?
- Install with `npm install katucharts.js`, then call KatuCharts.chart(container, { chart: { type: 'scatter' }, series: [...] }).
- Why does my 散点图 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.