Hello I looked around in AF forums and tried suggested approaches based on TagMax-TagMin incombination with PrevEvent as well as TagMean formula. It does work but if I try to trend such an rate change output attribute without writing to a Pi point, it is too slow.
Have anyone tried to optimize this to speed up. For example does using 1 day intervals instead of 1 min interval help speed ?
Periodic scheduling will help performance for summary calculations with high frequency data. Trigger based calculations work well if you have tags like Valve which doesnt change too often. Dynamic calculations i.e. without PI Point reference will work well if you have high configuration i.e. RAM.These are the observations noticed as part of testing AF analysis.
Please let me know in case of any additional information.