![]() ![]() Other coders you are working with can find exactly what piece of code causes a particular thing to happen easily and make an adjustment in that one section of code that trickles down to everywhere it needs to be.įuture chart code I share will be following this general system. Easy maintenance is critical to working fast. The conditions apply when you first use draw_chart and whenever resize_chart is needed, and any modifications in logic happen in only one section of the code in one file. I have personally found developing charts in this way to be much easier than trying to get CSS to cascade in the way you expect it to. This modification to the calc_xAxis function should look very similar to the media query strategy, although the modifications happen in the same place where you dictate the relevant feature and JavaScript lets you be a bit more creative with how many ticks exist in the DOM. 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. Going Through the Functions From Top to Bottom draw_chart The default value varies by chart type Radial charts (doughnut, pie, polarArea, radar) default to 1 and others default to 2. Changing it from 85% of window.innerWidth to 75% of window.innerWidth should only require a click and two keystrokes. Now to make the chart responsive, replace the set height and width of the chart, with a viewBox attribute using the same height and width values.attr('viewBox', 0 0 300 600) Size of the chart is pre-defined with the height 300 and width 600. Ctrl + F should only find a single match for “width =”. In many existing examples of responsive D3 design–and most of my previous projects– the resize function restates lines of code. Additionally, stylistic choices should only be declared in one place. ![]() The functions should behave consistently across all chart elements. It should be easy for clients or team members to use the products of the visualization developer with minimal additional consulting or modifications. The chart will adapt to their requirements. I have this D3 chart - pretty much out of the box. Even though I control both the iframe and the D3 visualization on this blog, I want whoever the theoretical frontend developer or content manager controlling the iframe is to have final say over the dimensions of the chart purely by setting the iframe width and height. These functions are written under the assumption that the chart will eventually be embedded in an iframe and does not need to interact with other charts or JavaScript on the main page. ![]()
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