地图
地图点
type: 'mappoint'在底图上按地理经纬度（lat/lon）坐标放置的点标记。标记、数据标签、提示框、悬停和点击都使用与底图相同的 mapView 投影。
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
地图点
编辑 · JSON
数据格式
{ id: string, lat: number, lon: number, color? }
数据结构
传入图表的 JSON——可直接放进你的 series。
data: [
{ id: 'New York', lat: 40.71, lon: -74.0 },
{ id: 'London', lat: 51.5, lon: -0.12 },
{ id: 'Tokyo', lat: 35.68, lon: 139.69 }
]示例
import KatuCharts from 'katucharts.js';
KatuCharts.chart('container', {
chart: { type: 'map' },
chart: { type: 'map', map: world },
series: [
{ type: 'map', mapData: world, data: [] },
{
type: 'mappoint',
dataLabels: { enabled: true, format: '{point.id}' },
data: [
{ id: 'New York', lat: 40.71, lon: -74.0 },
{ id: 'London', lat: 51.5, lon: -0.12 }
]
}
]
});类型特定选项
| 选项 | 描述 |
|---|---|
lat / lon | 每个标记的地理坐标。 |
marker | { radius, lineColor, lineWidth, enabled }。 |
dataLabels | 每个点的标签，例如 format: '{point.id}'。 |
color | 标记颜色（系列或单点）。 |
Common errors
- Why does my 地图点 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 地图点 chart in JavaScript?
- Install with `npm install katucharts.js`, then call KatuCharts.chart(container, { chart: { type: 'mappoint' }, series: [...] }).
- Why does my 地图点 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.