Here is my predicament:
I have a template sensor that is a unitless measure as it stores pH of a pool. I did set it up to be device_class: "pH"
however since the template sensor will report “Unknown” as the value at the startup process it will always be rendered as a bar chart rather than a graph. This is not acceptable for me as I’d like to see a graph.
How can I force it to be a graph yet still remain unitless? The problem is if I defined a unit of “pH” I get a warning that I’m assigning a unit to a measurement that is meant to be unitless.