How to visualize bar chart with react-chart-showing label on the bar
Nov 30, 2024 am 04:53 AM
To create a bar chart in React using react-chartjs-2 and display labels directly on the bars (not in the tooltip), you can use the react-chartjs-2 library combined with the Chart.js DataLabels plugin.
Steps to Implement
- Install the Required Libraries: Ensure you have both react-chartjs-2 and chart.js installed in your project. Additionally, install the chartjs-plugin-datalabels plugin:
npm install react-chartjs-2 chart.js chartjs-plugin-datalabels
Import the Necessary Components: Import the chart component, plugin, and register them with Chart.js.
Set Up the Chart Configuration: Configure the options object to include the datalabels plugin.
ender the Chart: Use the Bar component from react-chartjs-2 to render your chart.
Example Code
Here’s an example to create a bar chart with labels shown directly on the bars:
import React from "react";
import { Bar } from "react-chartjs-2";
import {
Chart as ChartJS,
CategoryScale,
LinearScale,
BarElement,
Title,
Tooltip,
Legend,
} from "chart.js";
import ChartDataLabels from "chartjs-plugin-datalabels";
// Register Chart.js components and plugins
ChartJS.register(
CategoryScale,
LinearScale,
BarElement,
Title,
Tooltip,
Legend,
ChartDataLabels // Register the DataLabels plugin
);
const BarChartWithLabels = () => {
// Chart data
const data = {
labels: ["January", "February", "March", "April", "May"],
datasets: [
{
label: "Sales",
data: [30, 20, 50, 40, 60],
backgroundColor: "rgba(75, 192, 192, 0.6)",
borderColor: "rgba(75, 192, 192, 1)",
borderWidth: 1,
},
],
};
// Chart options
const options = {
responsive: true,
plugins: {
legend: {
display: true,
position: "top",
},
datalabels: {
color: "black", // Label color
anchor: "end", // Position the label near the bar's edge
align: "top", // Align the label to the top of the bar
formatter: (value) => value, // Format the label (e.g., show the value)
},
},
scales: {
y: {
beginAtZero: true,
},
},
};
return (
<div>
<p>QA for you:</p>
- How to customize datalabels for each dataset when using stacked bar ?
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