Neat, but I'd argue this is more a "Map of significant wildfires, with size and cause" than the "visualization of causes of wildfires" as suggested by the title.
If you mouse over the fire events, you will see a cause of the representative data point for that cluster whether it is "lightning", "arson", etc. as well as other details about that specific fire.
Headline writer misinterpreted "origin of wildfires" to mean "cause of wildfires". It's a map of the geographic origin of wildfires and hovering lists their cause when known.
It's OK as an infographic, but it's a map showing the "where" not a visualization showing the "why".
If you mouse over the fire data points, it tells you the cause whether it is "lightning", "arson", etc. so you can see which are naturally occurring and which are human made
Author of the vis here. Thanks for posting this! I'm working on a better demo that shows causes of the fires more clearly, as well as changes over time. Stay tuned!
I was expecting a histogram with count over causes here.
author of the vis here. Yes I'm working on a new infographic on this dataset that shows aggregated fires grouped by causes.