how to create a scatter chart in chart js

by chandramouliprabuoff Updated: Jan 4, 2024

Guide Kit

JavaScript serves as the key to unlocking the world. Dynamic engaging scatter charts use it.

Leveraging the capabilities of the Chart.js library. you can weave a visual narrative. The depicting data points on a digital canvas. Let's embark on a journey through the fundamental elements, and steps. The possibilities that define the creation of a scatter chart using JavaScript.

1. JavaScript and Scatter Plots:

JavaScript acts as a magic wand. They transform mundane data into vibrant scatter plots. Through the lens of Chart.js, a popular charting library. you gain the ability to breathe life into your data on the web.

2. Chart.js Initialization:

Begin your journey by invoking the `new Chart` function. Setting the stage for your scatter chart. Specify the chart type as 'scatter' to pave the way for a compelling representation.

3. Data Unveiling:

Every point on your scatter chart tells a story. The `data` property becomes your storyteller. The unveiling of the significance of each coordinate. By the horizontal (x-axis) and vertical (y-axis) planes.

4. Interaction Unleashed:

Make your scatter chart interactive by incorporating tool tips. These small, informative pop-ups appear when hovering over data points. revealing more insights and fostering an experience.

5. Diverse Chart Types:

While the scatter chart takes center stage, Chart.js offers a diverse array of chart types. From bar charts to line charts. Each of the types adds a layer of versatility to your data visualization toolkit.

6. Managing Multiplicity:

With the `new Chart` function, manage many charts on the same canvas. Whether comparing datasets or exploring various categories. JavaScript allows you to orchestrate a symphony of data.

7. Beyond Scattering:

Extend your horizons with Chart.js, venturing into the realms of bubble charts and pie charts. This diversity empowers you to choose the most fitting visualization for your dataset.

8. Documentation as Your Guide:

Navigate the journey with confidence, armed with extensive documentation. Chart.js provides a roadmap detailing chart elements. Provides customization options, and the nuances of chart types.

9. Compatibility Across Browsers:

In the vast landscape of the internet. kindly ensure your scatter chart reaches every corner. even the realms of Internet Explorer. JavaScript guarantees compatibility, making your visual masterpiece accessible to all.

10. Marker Types and Series Symphony:

Fine-tune your scatter chart by experimenting with marker types. Introduce complexity and richness by weaving many series into the narrative. creating a visual symphony of data.

11. Integrating Intelligence:

Enrich your scatter chart with the wisdom of machine learning. embed your visualizations into machine learning projects. providing a tangible representation of predictions and results.

12. Canvas and Angular:

The canvas element becomes your artistic canvas, rendering your scatter chart with precision. Explore integration with frameworks like Angular. Infuse your creation with extra dynamism and functionality.

In conclusion, crafting a scatter chart in JavaScript is a tale of creativity. Each data point becomes a character in a visual story. The simplicity of the process, coupled with the power of JavaScript and Chart.js. This journey makes this journey an exciting exploration of data visualization possibilities.

Fig 1: Preview of the output that you will get on running this code from your IDE

Code

How do you plot scatter graph with chart.js

JavaScriptLines of Code : 50License : Strong Copyleft (CC BY-SA 4.0)

x: {      
  type: 'time',
  time: {
    parser: 'YYYY-M-D',
    unit: 'day',
    displayFormats: {
      day: 'D MMM YYYY'
    },
    tooltipFormat: 'D MMM YYYY'
  }
}

var test = [
  { x: "2022-1-8", y: 950 },
  { x: "2022-1-9", y: 1100 },
  { x: "2022-1-10", y: 990 },
  { x: "2022-1-12", y: 1250 },
  { x: "2022-1-13", y: 1050 }
];

var chart = new Chart('chart-line', {
  type: 'scatter',
  data: {
    datasets: [{
      data: test,
      label: 'buys',
      borderColor: "#3e95cd"
    }]
  },
  options: {
    responsive: false,
    scales: {
      x: {      
        type: 'time',
        time: {
          parser: 'YYYY-M-D',
          unit: 'day',
          displayFormats: {
            day: 'D MMM YYYY'
          },
          tooltipFormat: 'D MMM YYYY'
        }
      }
    }
  }
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.7.0/chart.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment-with-locales.js"></script>
<script src="https://cdn.jsdelivr.net/npm/chartjs-adapter-moment@1.0.0"></script>
<canvas id="chart-line" height="200"></canvas>

Instruction

Install Visual Studio Code IDE on your computer.
Create a new HTML file.
Copy the code using the 'Copy' button and create an HTML tag then paste the code inside the tag into that HTML file.
Copy the controller.js code and paste in the JS file created.
Create a script tag inside the body tag Then keep the function lines inside the script tag(refer to preview as well).
⁠Add the script tag from line 1 to 15.
Save and run the HTML file directly from the file location to generate the output

I found this code snippet by searching for 'how to create a scatter chart in chart js ' .you can try any such use case!

Environment Tested

I tested this solution in the following versions. Be mindful of changes when working with other versions.

The solution is created in Visual Studio Code 1.75.1.

Using this solution, we are able to process form using angular js with simple steps. This process also facilities an easy way to use, hassle-free method to create a hands-on working version of code which would help us to create a scatter chart in chart js.

FAQ

1. What is JavaScript and how is it used in creating scatter charts?

JavaScript is a widely used programming language for web development. Developers use JavaScript with libraries like Chart.js or D3.js to describe data. Customize chart appearance, and handle user interactions. It allows for dynamic and interactive visualizations on web pages.

2. How can I present chart data using scatter chart js?

For effective presentation, scatter chart js allows data configuration in supported formats customization of colors and markers, and tooltip usage for detailed information.

3. What is the difference between a Bubble Chart and a standard scatter chart in terms of data visualization?

A standard scatter chart represents individual data points on a two-dimensional plane. A Bubble Chart adds a third dimension by using the size of bubbles to give more information. providing a visual distinction data visualization.

4. How does the horizontal axis affect the display of data on a scatter chart?

The horizontal axis in a scatter chart represents one variable. It determines the spread of data points. It allows for the observation of patterns. trends related to that specific variable. Proper scaling is crucial to represent the data range.

5. What resources are available for learning about and implementing scatter chart js, such as documentation or tutorials?

Resources for learning scatter chart js. It includes official documentation from libraries like Chart.js and Plotly.js. tutorials on D3.js, online coding platforms with user contributed. examples, providing a mix of official guidance. Community-driven insights for effective learning and implementation.

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