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The trend line (shown in yellow on the Plot Page) and the trend values shown on the Trend Page are calculated using one of the two formulae shown on the right. | The trend line (shown in yellow on the Plot Page) and the trend values shown on the Trend Page are calculated using one of the two formulae shown on the right. | ||
The Settings page allows you to chose which formula to use. If you enter a weight value every day, the two formulae will give nearly identical results. The difference between them appears if you have gaps in your weight log. The Hacker Diet formula does not take elapsed time into account when calculating the trend. So if you enter a weight after having not weighed yourself for a month, the Hacker Diet formula will give as much (mathematical) weight to the penultimate and earlier weight values as they would have had if you had no gap in your weight log. The default formula used by maeFat takes the time interval into account, and will decrease the (mathematical) weight given to entries which were made long ago. The Hacker Diet formula is less computationally expensive, so if you have a weight log with many thousands of entries, it will be faster to use the Hacker Diet formula, which will also save a tiny amount of battery power. | The Settings page allows you to chose which formula to use. If you enter a weight value every day, the two formulae will give nearly identical results. The difference between them appears if you have gaps in your weight log. The Hacker Diet formula does not take elapsed time into account when calculating the trend. So if you enter a weight after having not weighed yourself for a month, the Hacker Diet formula will give as much (mathematical) weight to the penultimate and earlier weight values as they would have had if you had no gap in your weight log. The default formula used by maeFat takes the time interval into account, and will decrease the (mathematical) weight given to entries which were made long ago. The Hacker Diet formula is less computationally expensive, so if you have a weight log with many thousands of entries, it will be faster to use the Hacker Diet formula, which will also save a tiny amount of battery power. | ||
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