Temperature from one hour ago

[Troon]

@aleco

From my understanding you keep a single attribute that contains a list of 335 tuples (=24 per day for 14 days), each with time and value?

Yes.

@aleco

I was rather looking into saving one list for each hour of the day, which would allow me to compare the current value with previous days at the same time

Can you provide an example data structure that shows what you want? Something like this?

{
  0: [0, 0, 0, ..., 0, 0],
  1: [0, 0, 0, ..., 0, 0],
  ...
  12: [178, 214, 199, ..., 542, 335],
  ...
  23: [0, 0, 0, ..., 0, 0]
}

If so, is history[0][0] the most recent midnight reading, or the oldest?

@aleco

(with some AI help

Please don’t do that. Whilst AI has its place, its use in HA is strongly discouraged as it has learned from old data and forum posts. Much of what it writes relating to HA is simply wrong, and it takes us longer to fix it up than to solve the original problem. [example][example]