![]() 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. ![]() Not all charts are going to look good, or more importantly visualize the data effectively at smaller sizes, simply shrinking it down isnât always good enough. See the Pen Viewport Resize Debounce by Derek Morash ( on CodePen. window.addEventListener('resize', function() ) 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 âwindowâ element for the âresizeâ event. Event listeners are used for every kind of user interaction, some commonly used events are mouse and keyboard inputs. (Try resizing your browser window to see this bar chart resize.) When the viewport size changes the following will happen: update the range of the x-scale update. In this example we have a bar chart that will respond to changes in the viewport width. attr('transform', 'translate(' + Math.min(width,height) / 2 + ',' + Math. Therefore this article describes a simple architecture for making D3 visualisations responsive. To execute code when the user resizes or changes the orientation of their browser we need an event listener. var svg d3.select('.chart-container').append('svg'). Where WIDTH and HEIGHT are the width and height of your graph. You can make the responsive by adding a preserveAspectRatio attribute of xMinYMin meet, and a viewbox attribute of 0 0 WIDTH HEIGHT. As long as the is responsive, the content you add with D3 will scale automatically. 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. The is the element you need to make responsive.Thereâs no point in making a responsive website if your chart is going to stick out the side of the viewport on a mobile device. You can find this approach suggested in a few posts as a standard way to make the chart responsive. Making responsive D3js charts is an essential part of creating data visualizations that are effective and accessible on the web. Approach 2: Listen to window.resize or use jQuery to dispatch events If you have CSS handling the layout of your DOM elements, you could update your d3 charts by listening for resize events from the browser window.
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