ProPublica just posted this "cartogram wind map". A tweet from the author suggests it's a novel visualization technique they are using. It's weird that the actual name that these data journalists came up with for their visualization technique points to a big problem with the technique: wind maps are vector fields, but these arrows aren't vector fields. You might look at this and think that, for example, coronavirus is spreading in a generally southeasterly direction.


If they decoupled it from the cute geographic representation it wouldn't carry that connotation anymore, it would be small multiples of sparklines and would get the same point across. But I understand that this kind of thing is more "viral" (too soon?) and here I am contributing to its virality.

@darius I think the most viral part of your tweet is the southeastern spread

@darius agreed. This is not great data visualization design.

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