I’m totally new to HA and am only just scratching the surface of writing code, learning as I go and way below the level of most posts. Anyway, I’m trying to get a history graph using an entity of a fan heater which by default shows three sets of data on the graph - set temperature, actual temperature and heating. What I want is just to show “heating” i.e. the on/off state of this entity, like I can for a switch, over time. I can’t find any way using the code editor to show only one set of data, or any list of what code can be used with the history graph
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