As I sketched out the requirements for this project in my head, interactivity was at the top of the list. In practice, I’d be likely to pair this chart with one or two simpler charts that support the presentation and fill in some of the areas where the chord itself might be weak, for example a bar chart could show the aggregate picture, which should clarity any confusion from the donut and to assist with interactivity. Interactivity is essential to this presentation, so if you work at one of those companies who pastes tableau screen captures into powerpoint, this probably isn’t the right choice for you. Images of chords have graced the cover of more than a couple scientific journals and magazines, but such charts don’t usually do much for me, they may be beautiful, if that sort of thing does it for you, but they aren’t terribly illuminating.
A chord diagram may be too complex to take in all at once. Your workbook will certainly be a lot faster. If you just want a picture of a chord diagram, you’re probably better off getting it from Circos. Figuring out the underlying math isn’t for everyone, but I never doubted the possibility of creating this chart type in Tableau.
There is very little math in the Tesla workbook (OK, aside from the rotation matrices), but for the chord diagram I burned through a couple #2 pencils before I even began to build the workbooks in this post. I’m hoping this workbook will make an appearance at Allan Walker and Anya A’Hearn’s Minority report talk at TCC15, somebody please save me a seat. I’m not going to go deeper into the techniques behind this workbook, it there is demand I could certainly do a followup to my original 3d post that that appeared on drawing with numbers.
Show chord diagrams tabledit download#
What data visualization best tells the story of this data? Should I go with a stacked bar chart or a scatterplot? BTW, if you’ve got your chroma-depth glasses handy, you’re going to want to grab them and download this workbook. The data underlying this workbook was parsed from a cad file. This workbook raises an interesting question in terms of best practices. If it isn’t loaded yet, consider that I’m building a car in a data visualization tool, and quit reading so fast! Seriously… I’d like a Tesla, and here is the workbook. Chord Diagrams aren’t built into Tableau, and I wouldn’t expect them to be added any time soon, but lines and polygons are sufficient to make just about anything you’d like. My hope is that by enabling chord diagrams in Tableau, we can allow some experimentation and maybe establish some guidelines to know when it might be a good option, even if that answer turns out to be never.Ĭan I make this in Tableau? When it comes to chord diagrams I’ve seen a lot of responses that make me cringe. Searching the internet, I found more bad than good, so I chose the examples here with some care. What I think most folks can agree on is that Chord Diagrams aren’t the right choice for every visualization. My opinion may not be that convincing on this topic, but the alternatives I’ve seen so far, such as stacked bars, heat maps or in the case of geographic data just throwing it all on a map and hoping it makes sense have their own problems as well. The data underlying the chord diagrams in this post is included at the end. I’m fine with the possibility that something better could turn up.
I think that would be a great follow up and I certainly welcome that sort of feedback. Joe Mako suggested the possibility that he will visualize the data from this post in a more effective way. I’ll introduce the chart type a bit more carefully later, and provide a reference, but by the end of this post my hope is that you’ll have a sense of how you might build this type of chart with your own data in Tableau. Can I make this in Tableau?… You can now.Ĭhord Diagrams are a chart that is often used for visualizing network flows that represent migration within a system, the one on the left for example, shows changes in cell phone choice for a collection of users.
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