Event weighted Standard Deviation in PI ACE

Discussion created by inform2prabhat Champion on Sep 13, 2012
Latest reply on Sep 17, 2012 by inform2prabhat

Hi Team,


Hope everyone is doing good. I again need your help to move ahead with my program :).


Can we use Event weighted Standard Deviation functions directly in PI ACE. I don't want to make a SDK call and using Summaries to find this out.


when i tried finding out the inbuilt function , I got only Time weighted standard deviation of archive values.




The user wants to compare the results of PIACE output tags with the excel based PIAdvCalcVal(Tag,"*-1h","*","stdev","event-weighted", 0, 1, 0,"TestServer") function. which will never match.


Please let me know How can I calculate Event weighted Stdev for a particular interval. 


Many Thanks,


Prabhat Mishra