Enable rolling calculations
Currently all windowed calculations use a fixed window. The start and end time of the window are fixed in time. So if you apply the time average filter this leads to a graphs with steps. Especially if the time window is relatively large with respect to the plotted time range. For example if I average over 10 minutes and show 1 hour of data, I have 6 steps.
It would be better to make this window a rolling one for all calculations. Currently it is possible to do this by using a calculated tag. However this approach has several disadvantages:
- a licensed tag is consumed
- difficult to change the window size for the end user
- these calculated tags are stored, but contain no new information