Basic Scatter Plot
Code
ChartUtil.tsx
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"use client";
// reference: https://d3-graph-gallery.com/graph/scatter_animation_start.html
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 containerRef = useRef<HTMLDivElement | null>(null);
const data: any[] = Object.values(rawData);
const renderFunc = useCallback(() => {
const container = containerRef.current as HTMLElement;
if (!container) return;
const margin = { top: 50, right: 25, bottom: 25, left: 75 },
width = container.offsetWidth - margin.left - margin.right,
height = 600 - margin.top - margin.bottom;
// append the svg object to the body of the page
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 x = d3.scaleLinear().domain([0, 0]).range([0, 0]);
svg
.append("g")
.attr("class", "myXaxis")
.attr("transform", `translate(0, ${height})`)
.call(d3.axisBottom(x))
.call((d) =>
d
.selectAll("text")
.attr("font-family", "Space Mono")
.attr("font-size", "12px")
)
.attr("opacity", "0");
const y = d3.scaleLinear().domain([0, 500000]).range([height, 0]);
svg
.append("g")
.call(d3.axisLeft(y))
.call((d) =>
d
.selectAll("text")
.attr("font-family", "Space Mono")
.attr("font-size", "12px")
);
svg
.append("g")
.selectAll("dot")
.data(data)
.enter()
.append("circle")
.attr("cx", function (d) {
return x(d.GrLivArea);
})
.attr("cy", function (d) {
return y(d.SalePrice);
})
.attr("r", 2)
.attr("stroke", "#fff")
.attr("stroke-width", 1)
.style("fill", "magenta")
.on("mouseover", (event, d) => {
d3.select(event.target).raise().attr("r", "8").attr("stroke-width", 2);
})
.on("mouseleave", (event, d) => {
d3.select(event.target).attr("r", "4").attr("stroke-width", 1);
});
// new X axis
x.domain([0, 6000]).range([0, width]);
svg
.select(".myXaxis")
.transition()
.duration(1500)
.attr("opacity", "1")
.call(d3.axisBottom(x) as any)
.call((d) =>
d
.selectAll("text")
.attr("font-family", "Space Mono")
.attr("font-size", "12px")
);
svg
.selectAll("circle")
.transition()
.delay(function (d, i) {
return i * 1.5;
})
.duration(1500)
.attr("cx", function (d: any) {
return x(d.GrLivArea);
})
.attr("cy", function (d: any) {
return y(d.SalePrice);
})
.attr("r", 4)
.style("fill", "#02b4fa");
}, [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;