The chart needs to communicate the same data just in a different way depending on viewport size. It depends on the chart but something to consider could be an orientation change or a different layout at certain viewport break points, almost like CSS media queries. Here we will be using D3.js to make bar graph responsive. ![]() A simple way to make any SVG or D3.js chart responsive. Not all charts are going to look good, or more importantly visualize the data effectively at smaller sizes, simply shrinking it down isn’t always good enough. Visual representations of data are the most effective means of conveying information stored and D3 provides the ease and flexibility to create these data visualizations. resizeDelay: number: 0: Delay the resize update by the given amount of milliseconds. Gets passed two arguments: the chart instance and the new size. onResize: function: null: Called when a resize occurs. See the Pen Viewport Resize Debounce by Derek Morash ( on CodePen. The default value varies by chart type Radial charts (doughnut, pie, polarArea, radar) default to 1 and others default to 2. window.addEventListener('resize', function() ) In this case below, I have used the diagonal but not a resize function. The idea is to calculate the diagonal of the parent div and use that to change the radius, font-sizes etc. I have made a D3 donut chart look responsive but I want it to be 100 responsive on any screen (div) resize. To use an event listener you need three things the DOM element you want to target, the type of event you want to listen for (click, onmouseover, resize, etc), and a function for what you want to happen when that event is triggered.įor this example we want to listen to the “window” element for the “resize” event. Responsive D3 Donut Chart on Screen Resize. Event listeners are used for every kind of user interaction, some commonly used events are mouse and keyboard inputs. To execute code when the user resizes or changes the orientation of their browser we need an event listener. Data visualizations should respond to viewports exactly like every other element on the page, if not you could be failing a large number of your users. There’s no point in making a responsive website if your chart is going to stick out the side of the viewport on a mobile device. ![]() Making responsive D3js charts is an essential part of creating data visualizations that are effective and accessible on the web.
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