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chart.js
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| // data example | |
| // [ | |
| // { | |
| // "color": "rgb(0, 0, 255)", | |
| // "list": [ | |
| // { | |
| // "value": 226454, | |
| // "year": 1970 | |
| // }, | |
| // { | |
| // "year": 1980, | |
| // "value": 183210 | |
| // }, | |
| // { | |
| // "year": 1990, | |
| // "value": 219067 | |
| // }, | |
| // { | |
| // "year": 1991, | |
| // "value": 228811 | |
| // } | |
| // ] | |
| // }, | |
| // { | |
| // "color": "rgb(255, 36, 0)", | |
| // "list": [ | |
| // { | |
| // "value": 81077, | |
| // "year": 1970 | |
| // }, | |
| // { | |
| // "year": 1980, | |
| // "value": 68966 | |
| // }, | |
| // { | |
| // "year": 1990, | |
| // "value": 73857 | |
| // }, | |
| // { | |
| // "year": 1991, | |
| // "value": 77277 | |
| // } | |
| // ] | |
| // } | |
| // ] | |
| import React, { useEffect } from "react"; | |
| import { line, curveBasis, select } from "d3"; | |
| import { scaleLinear } from "d3-scale"; | |
| const WIDTH = 600; | |
| const HEIGHT = 400; | |
| const drawChart = (data, Xmin, Xmax, Ymin, Ymax) => { | |
| const scaleX = scaleLinear().domain([Xmin, Xmax]).range([0, WIDTH]); | |
| const scaleY = scaleLinear().domain([Ymin, Ymax]).range([0, HEIGHT]); | |
| const createPath = line() | |
| .curve(curveBasis) | |
| .x((d) => scaleX(d.year)) | |
| .y((d) => scaleY(d.value)); | |
| const selection = select("#chart").selectAll(".path").data(data); | |
| selection | |
| .enter() | |
| .append("path") | |
| .datum((d) => d.list) | |
| .attr("class", "path") | |
| .attr("fill", "none") | |
| .attr("stroke", (d) => d.color) | |
| .attr("stroke-width", "1") | |
| .attr("d", createPath); | |
| data.forEach((item) => { | |
| selection.datum(item.list).attr("stroke", item.color).attr("d", createPath); | |
| }); | |
| selection.exit().remove(); | |
| }; | |
| const Chart = ({ data, Xmin, Xmax, Ymin, Ymax }) => { | |
| useEffect(() => { | |
| drawChart(data, Xmin, Xmax, Ymin, Ymax); | |
| }, [data]); | |
| return ( | |
| <div> | |
| <svg className="bg-white m-4" width={WIDTH} height={HEIGHT} id="chart" /> | |
| </div> | |
| ); | |
| }; | |
| export default Chart; |
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