Multi-line chart
Code
ChartUtil.tsx
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"use client";
import React, { useEffect, useCallback, useRef } from "react";
import * as d3 from "d3";
import { useResizeObserver } from "@/hooks/useResizeObserver";
import { ChartProps } from "@/types";
const ChartUtil = ({ data: rawData }: ChartProps) => {
const data = Object.values(rawData).filter((n: any) => n.prop !== undefined);
const containerRef = useRef<HTMLDivElement | null>(null);
const renderFunc = useCallback(async () => {
const container = containerRef.current as HTMLElement;
if (!container) return;
const margin = { top: 10, right: 10, bottom: 30, left: 70 },
width = container.offsetWidth - margin.left - margin.right,
height = 600 - margin.top - margin.bottom;
const svg = d3
.select(container)
.html("")
.append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", `translate(${margin.left},${margin.top})`);
const sumstat = d3.group(data, (d: any) => d.name);
const x = d3
.scaleLinear()
.domain(
d3.extent(data, function (d: any) {
return d.year;
}) as any
)
.range([0, width]);
svg
.append("g")
.attr("transform", `translate(0, ${height})`)
.call(d3.axisBottom(x).ticks(5))
.call((d) =>
d
.selectAll("text")
.attr("font-family", "Space Mono")
.attr("font-size", "14px")
);
const y = d3
.scaleLinear()
.domain([
0,
d3.max(data, function (d: any) {
return +d.n;
}) ?? 0,
])
.range([height, 0]);
svg
.append("g")
.call(d3.axisLeft(y))
.call((d) =>
d
.selectAll("text")
.attr("font-family", "Space Mono")
.attr("font-size", "14px")
);
const color = d3
.scaleOrdinal()
.range([
"#e41a1c",
"#377eb8",
"#4daf4a",
"#984ea3",
"#ff7f00",
"#ffab03",
"#a65628",
"#f781bf",
"#999999",
]);
svg
.selectAll(".line")
.data(sumstat)
.join("path")
.attr("fill", "none")
.attr("stroke", function (d: any) {
return color(d[0]) as string;
})
.attr("stroke-width", 1.5)
.attr("d", function (d) {
return d3
.line()
.x(function (d: any) {
return x(d.year);
})
.y(function (d: any) {
return y(+d.n);
})(d[1] as any);
});
}, [data]);
useEffect(() => {
containerRef.current !== null && renderFunc();
}, [renderFunc]);
const resizeHandler = useCallback(() => {
containerRef.current !== null && renderFunc();
}, [renderFunc]);
useResizeObserver(containerRef, resizeHandler);
return <div ref={containerRef}></div>;
};
export default ChartUtil;