- D3.js is suitable for developers who need complete control over their visualizations and are willing to invest time in learning the underlying concepts.
- C3.js is a good choice for developers who want to create charts quickly and easily without sacrificing too much customization.
How to use C3.js APIs
Key takeaways:
C3.js APIs provide a flexible and powerful way to customize and interact with charts, allowing for dynamic updates and data visualization.
Common APIs include
flow,names,colors,range,labels,xgrids, andresize, each offering specific functionalities for modifying chart elements.By understanding and effectively using these APIs, developers can create visually appealing and interactive charts that effectively convey data insights.
C3.js abstracts away the intricacies of low-level charting libraries, allowing developers to focus on their data and design intent. The real magic lies in C3.js’s APIs for dynamic manipulation. In this Answer, we will learn about different APIs provided by C3.js in detail.
C3.js APIs
C3.js provides multiple APIs, making it easier for programmers to create interactive and visually appealing charts on webpages. Some of these APIs include options for customizing colors, labels, and data formatting, empowering beginners to personalize their charts with ease.
APIs provided by the C3.js
Let's explore the purpose and examples of these APIs:
The flow API: This API in C3.js allows us to dynamically load or unload data as flow() API:
// Update the chart using the 'flow' methodchart.flow({columns:'' ,// Add new data columnslength: 0, // Set animation duration (0 for instant update)done: function() {// Optional callback function after the flow is completeconsole.log('Data flow completed!');}});
Syntax of flow() API
The names API: This API allows us to update labels of the data names. Let's see how to update it using names() API:
//Option 1: Use names within the generate methodnames: {data1: 'Custom Name for data1', // here data1 is your data name}
names() API syntax
The colors API: This API allows us to update the colors of the data in charts. Let's see how to update the colors using colors():
//Option 1: Use colors within the generate methodcolors: {data1: '#ff0000', // here data1 is your data name}
Syntax for colors API
The range API: This API allows us to control the minimum and maximum values shown on the chart axes. Let’s explore how to set axis range using the range:
//Option 1setTimeout(function () {chart.axis.range({max: 1000, min: -1000});}, 5000);
Syntax for range API
The labels API: This API allows us to update the axis labels of the chart. Let’s explore how to set axis labels using the API:
//Option 1: Setting labels within the generate->axis methodaxis: {x: {label: 'X Axis Label'},y: {label: 'Y Axis Label'}}
Syntax for labels API
The xgrids API: This API allows us to customise the grid lines on your charts' X-axis. These grid lines aid in directing the viewer's eye and provide context for the data points. Let’s explore how to update grid lines using this API:
setTimeout(function () {chart.xgrids([{value: 1, text:'Label 1'}, {value: 4, text: 'Label 4'}]);}, 1000);
Syntax for xgrids() API
The resize API: This API allows us to resize the chart. Let’s explore how to resize the chart using this API:
setTimeout(function () {chart.resize({height:300, width:400})}, 10000);
Syntax for resize() API
Code example
In the following example, we're illustrating different examples of APIs. A bar chart has been used to show team performance in different months. Here is the following details:
X-axis: The x-axis shows months.
Y-axis: The y-axis shows the number of tasks performed by a team.
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