That is, if you have a bunch of rect elements within your SVG, Flexbox can’t move them.
Flexbox can organize non-SVG DOM elements: You can’t use Flexbox to arrange elements within SVG.More info on the differences can be found here. While you can use CSS-grid for the methods described in this post, I’m going to primarily focus on using Flexbox. Flexbox arranges DOM elements in rows or columns: Unlike CSS grid, Flexbox arranges items in a one-dimensional manner in either a row or column format.elements), it can also manipulate non-SVG elements (like p, div, and span elements). It even says it right on the D3 homepage: “D3 allows you to bind arbitrary data to a Document Object Model (DOM), and then apply data-driven transformations to the document.” meaning that while D3 can create and manipulate DOM elements that are on an SVG plane (think path, rect, circle etc. D3 manipulates DOM elements, not just SVG: In hindsight, I feel like this one should have been obvious, but I clearly missed it.If you’re already super-familiar with the inner-workings of D3.js, DOM elements, and Flexbox, you can skip this section.Īlthough I’d been using D3 to make graphics for over a year, I had some major misconceptions about what it can do that stopped me from fully grasping this concept early on.
D3 JS GALLERY STACK BAR BASED ON KEYS HOW TO
In this post, I’ll give some background information that I wish I knew, and an example of how to use this method to make a waffle chart, a modified histogram, and a stacked bar chart. I’m so in love with this method (for very specific circumstances) that I wanted to shout it from the rooftops.or at least from this post. I ended up loving it so much that one of the most recent data-viz stories that I programmed contains no SVG. And when I actually saw it in action in one of his more recent projects, I was mind-blown. In that moment, I was being stubborn and eventually got the SVG to work the way I wanted, but Matt’s suggestion stuck with me.
It turns out the answer to all of those questions is yes. I should have asked: You can make D3 graphics without SVG? Divs can be used to make bars? I can use flexbox to do all the alignment math for me? To be totally honest, I was super confused by the suggestion because it involved a few things that I honestly didn't know were possible. For some reason, the fact that an SVG space places its (0,0) coordinates at the top left corner instead of the bottom left corner will always cause some weird mental disconnect in my brain.Īmid all of my frustration, Matt suggested ditching the SVG altogether, making the bars out of div elements with a background-color and aligning them using Flexbox.
I had been building a stacked bar chart in D3.js, and was seriously struggling to get the bars to stack on top of each other nicely and to animate from the bottom of the graphic instead of the top. A few months ago, my co-worker Matt and I were collaborating on a project.
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