And that is where the problems beginn: I want to merge two items into one for a daily min./max. in my sitemap.
To calculte the daily min./max. I´ve used this example: https://community.openhab.org/t/openweathermap-daily-forecasts-with-free-api-using-plain-openhab-rules/68513. Of course I changed all temperature elements to %.0f %unit%, but I still get the decimal places. And because even the simple items in my example above don’t work as I expected, something else has to go wrong.