Create a Stacked Area Chart using Recharts in ReactJS

RechartJS is a library that is used for creating charts for ReactJS. This library is used for building Line charts, Bar charts, Pie charts, etc with the help of React and D3 (Data-Driven Documents).  

Recharts Stacked Area Chart is the extension of a basic area chart. It displays various continuous data in the same area chart for a better comparison of data. An area chart combines the line chart and bar chart to demonstrate numeric value deviation over a certain progressive variable.

Prerequisites:

• NPM & Node.js
• React JS
• Recharts.js

Approach:

To create a Stacked Area Chart we use the AreaChart component of recharts npm package. We first create a cartesian grid and X-axis and Y-axis. Then add multiple Area charts using Area components and get them stacked on top of each other. We use the same stackId for all charts.

Steps to Create React Application And Installing Module:

Step 1: Create a React application using the following command.

npx create-react-app foldername

Step 2: After creating your project folder i.e. foldername, move to it using the following command.

cd foldername

Step 3: After creating the ReactJS application, Install the required modules using the following command.

npm i --save recharts

Project Structure:

The updated dependencies in package.json file will look like

"dependencies": {
        "@testing-library/jest-dom": "^5.17.0",
        "@testing-library/react": "^13.4.0",
        "@testing-library/user-event": "^13.5.0",
        "react": "^18.2.0",
        "react-dom": "^18.2.0",
        "react-scripts": "5.0.1",
        "recharts": "^2.9.0",
        "web-vitals": "^2.1.4"
}

Example 1: This example implements a basic stacked Area chart using AreaChart and Area component of recharts npm package. To stack the two area chart component on top of each other we will add the same stackId to both Area components.

// Filename  - App.js

import React from "react";
import {
    AreaChart,
    Area,
    XAxis,
    YAxis,
    CartesianGrid,
    Tooltip,
} from "recharts";

const App = () => {
    // Sample data
    const data = [
        { name: "A", x: 30, y: 70 },
        { name: "B", x: 12, y: 88 },
        { name: "C", x: 15, y: 85 },
        { name: "D", x: 35, y: 65 },
        { name: "E", x: 54, y: 46 },
        { name: "F", x: 72, y: 28 },
        { name: "G", x: 32, y: 68 },
    ];

    return (
        <AreaChart width={500} height={700} data={data}>
            <CartesianGrid />
            <XAxis dataKey="name" />
            <YAxis />
            <Tooltip />
            <Area
                dataKey="x"
                stackId="1"
                stroke="green"
                fill="green"
            />
            <Area
                dataKey="y"
                stackId="1"
                stroke="blue"
                fill="blue"
            />
        </AreaChart>
    );
};

export default App;

Step to Run Application: Run the application using the following command from the root directory of the project:

npm start

Output: Now open your browser and go to http://localhost:3000/, you will see the following output:

Example 2: This example show to convert this from an area chart to a curved graph we will set the type property to monotone. And if we want area charts to stack on top of each other and third to overlap them instead of stacking we will give different stack id to one which needs to overlap and the same to those which have to be stacked.

// Filename  - App.js

import React from "react";
import {
    AreaChart,
    Area,
    XAxis,
    YAxis,
    CartesianGrid,
} from "recharts";

const App = () => {
    // Sample data
    const data = [
        { name: "A", x: 12, y: 23, z: 122 },
        { name: "B", x: 22, y: 3, z: 73 },
        { name: "C", x: 13, y: 15, z: 32 },
        { name: "D", x: 42, y: 35, z: 23 },
        { name: "E", x: 51, y: 45, z: 20 },
        { name: "F", x: 16, y: 25, z: 29 },
        { name: "G", x: 17, y: 17, z: 61 },
        { name: "H", x: 81, y: 32, z: 45 },
        { name: "I", x: 19, y: 43, z: 93 },
    ];

    return (
        <AreaChart width={500} height={700} data={data}>
            <CartesianGrid />
            <XAxis dataKey="name" />
            <YAxis />
            <Area
                type="monotone"
                dataKey="x"
                stackId="1"
                stroke="black"
                fill="black"
            />
            <Area
                type="monotone"
                dataKey="y"
                stackId="1"
                stroke="blue"
                fill="blue"
            />
            <Area
                type="monotone"
                dataKey="z"
                stackId="2"
                stroke="green"
                fill="green"
            />
        </AreaChart>
    );
};

export default App;

Output: Save the project using CTRL+S.Now open your browser and go to http://localhost:3000/, you will see the following output: