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
5 replies
-
To clarify, you are speaking of the application of an aggregate to a trend within the Trend Graph control, correct? You would like to have apply the aggregates in a 'running' format rather than a fixed 'time slice'.
-
Jeff Knepper Yes that is it I think. I attached a screenshot to be certain.
-
Roald Ruiter Understand clearly, thank you sir.
-
-
With settings:
Aggregate Kind: TimeAverage2,
Aggregate Interval: 08:00:00,
chart time span picker 1 day,
chart start date time picker: 13.03.2024 6:00:00
Resulted chart has 4 steps due to it actually starts averaging at 8:00:00. Is it possible to change Start time to start averaging at 6:00:00?
If Aggregate Interval: 06:00:00, it actually starts averaging at 6:00:00 but it selects only 6 hours not desired 8
In Canary Application there is AggregateStartTime parameter-
janez. stravs
The chart does not have an aggregate start time like a control in an application does. If using an 8h aggregate interval, it would just normalize to 12:00am, 8:00am, and 4:00pm. If wishing to stop and start on 6:00, I would recommend creating a calculated tag that runs periodically every 8h, then offsetting it by 6h. Something like this
-
Print this page