笛卡尔坐标
面积图
type: 'area'线条下的填充区域。支持普通和百分比堆叠、负值填充颜色和trackByArea悬停。
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
面积图
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: 'Free', data: [120, 260, 410, 600] }
]示例
import KatuCharts from 'katucharts.js';
KatuCharts.chart('container', {
chart: { type: 'area' },
series: [{ name: 'Free', data: [120, 260, 410, 600], fillOpacity: 0.3 }]
});类型特定选项
| 选项 | 描述 |
|---|---|
fillOpacity | 区域填充不透明度（默认0.75）。 |
fillColor | 覆盖填充颜色。 |
negativeFillColor | 阈值下的填充。 |
stacking | 'normal'或'percent'。 |
trackByArea | 悬停在区域上激活，而不仅仅是线条。 |
变体
百分比堆叠
将系列堆叠为 100%，以比较各部分随时间的构成。
KatuCharts.chart('container', {
chart: { type: 'area' },
plotOptions: { area: { stacking: 'percent' } },
series: [
{ name: '桌面端', data: [450, 520, 480, 610, 580] },
{ name: '移动端', data: [280, 350, 420, 510, 620] }
]
});负值阈值填充
用单独的 negativeColor 填充阈值以下的区域。
KatuCharts.chart('container', {
chart: { type: 'area' },
series: [{
data: [-12, -6, 4, 10, -3, 14, 22, 18],
threshold: 0,
negativeColor: '#B43417'
}]
});渐变填充
通过传入 fillColor 的垂直 linearGradient 渐变填充区域。
KatuCharts.chart('container', {
chart: { type: 'area' },
series: [{
name: '用户',
data: [320, 410, 380, 520, 610, 700, 540],
fillColor: {
linearGradient: { x1: 0, y1: 0, x2: 0, y2: 1 },
stops: [[0, 'rgba(45,133,116,0.4)'], [1, 'rgba(45,133,116,0)']]
}
}]
});Common errors
- Why does my 面积图 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 面积图 chart in JavaScript?
- Install with `npm install katucharts.js`, then call KatuCharts.chart(container, { chart: { type: 'area' }, series: [...] }).
- Why does my 面积图 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.