I am looking for a free data feed (with HTTP(S) API) which I can use for various demos:

  • something that I can map (both as markers and a heat-map)
  • and chart the values
  • real-time, and at least part of it should update often enough that someone looking at the page for 30 seconds (preferably less) will notice change
  • UK based is "nice to have" (London only is also acceptable), I also like Singapore (where the government have a lot of open data), but will accept anywhere
  • a single datum suffices (with multiple values; e.g datum is train, values are all trains, multiple datums (data) would be different train companies)

Any ideas?



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