How would you classify this diagram? To my mind it's probably best described as a static network time-series alluvial, but I'd appreciate a second opinion as all other examples I've come across (for example) use the approach to break down the same data observations across different facets, whereas this combines related observations over time.

enter image description here

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    $\begingroup$ I would just refer to it as a stacked area chart in which the stacks are allowed to swap positions (based on the relative ranking per point on the x axis). It also includes what appears to be a judicious amount of smoothing and slightly off-setting the stacks. I'm not quite sure what answer you are looking for though -- it is a class all by itself! $\endgroup$
    – Andy W
    Nov 18, 2014 at 12:35
  • $\begingroup$ Thanks Andy. Yes it does share something with the area graph, but I think visually a ranked version (without bezier curves) might be less visually accessible. Also I'd be a bit surprised if someone hadn't classified this approach before as it seems to have potential. $\endgroup$
    – geotheory
    Nov 18, 2014 at 16:23
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    $\begingroup$ it looks a little bit like a sankey diagram, but you could browse this at your leisure to see if there's anything closer visual-literacy.org/periodic_table/periodic_table.html# $\endgroup$
    – katya
    Nov 18, 2014 at 17:04
  • $\begingroup$ Thanks katya. The example here using d3's sankey library is identical, but similarly they seem uncertainty about classification. Nice interactive infographic-infographic btw. $\endgroup$
    – geotheory
    Nov 18, 2014 at 17:33


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