饼状图生成时依旧遇到了类型问题,记录如下:

import * as d3 from 'd3';
import * as React from 'react'; class TestGraph extends React.Component {
public componentDidMount() {
const marge = {
top: 60,
bottom: 60,
left: 60,
right: 60
};
const dataSet: any[] = [10, 23, 13, 40, 27, 35, 20];
const svg = d3.select("svg");
const g = svg.append("g")
.attr("transform", `translate(${marge.top},${marge.left})`);
const width: any = svg.attr('width');
const height: any = svg.attr('height');
// 此处必须把.domain里的参数转为字符串数组,不然会报类型错误
const colorScale: any = d3.scaleOrdinal()// 此处必须把colorScale类型设置为any,不然会在使用时报类型错误
.domain(d3.range(dataSet.length).map(value => {
return value.toString();
}))
.range(d3.schemeCategory10); const pie = d3.pie();
const ir = 0;
const or = 100;
const arcG: any = d3.arc()// 此处原理如上
.innerRadius(ir)
.outerRadius(or);
const pirData = pie(dataSet); const gs = g.selectAll(".g")
.data(pirData)
.enter()
.append("g")
.attr("transform", `translate(${width / 2},${height / 2})`); gs.append("path")
.attr('d', (d) => {// 此处为报错地方,需在上面设置arcG类型为any
return arcG(d);
})
.attr('fill', (datum, index) => {// 同上
return colorScale(index);
}); gs.append("text")
.attr("transform", d => {// 位置设在中心处
return "translate(" + arcG.centroid(d) + ")";
})
.attr("text-anchor", "middle")
.text(d => {// 此处需要转换返回值为string
return d.data.toString();
})
} public render() {
return (
<svg width={960} height={600}/>
)
}
} export default TestGraph;

最终效果如下:

D3(v5) in TypeScript 坐标轴之 饼状图生成-LMLPHP

05-08 15:42