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* keep track of the derivative for unit_time In this way, you will get a better estimate of the derivate during the timescale that is relavant to the sensor. This solved a problem where sensors have a low output resolution. For example a temperature sensor that can only be integer numbers. It might report many values that are the same and then suddenly go up one value. Only in that moment (with the current implementation) the derivative will be finite. With my proposed implementation, this problem will not occur, because it takes the average derivative of the last `unit_time`. * only loop as much as needed * treat the special case of 1 entry * add option time_window * use cv.time_period * fix comment * set time_window=0 by default * rephrase comment * use timedelta for time_window * fix the "G" unit_prefix and add more prefixes https://en.wikipedia.org/wiki/Unit_prefix * add debugging lines * simplify logic * fix bug where the there was a division of unit_time instead of multiplication * simplify tests * add test_data_moving_average_for_discrete_sensor * fix test_dataSet6 * improve readability of the tests * better explain the test * remove debugging log lines
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