Dynamic representation of PctGood() function in PI Vision
Looking for the ability to extract percentage good from “Min percent good” value calculated by Value Retrieval Methods analysis for a specified time range and link it to an AF Attribute to display the value in PI Vision. Value can then be recalculated dynamically depending on the time duration configured by the client (PI Vision). Analysis with PctGood() function does not allow ad-hoc time range manipulations by clients.
Working example: End-user opens a PI Vision display with a fixed start time and end time (midnight to midnight) to visualise “Percent good” for a certain attribute. The quality of the archived data for the attribute was “Bad” from midnight until 8 AM of the chosen day. “Percent good” returns 66% and changes accordingly if Start/End times of display are modified.
This is an example of ad hoc calculations for PI Vision displays. As such, I'm moving this idea to the PI Vision section.
Yes Please! This would be very helpful in understanding data quality. You guys must already have access to percent good since you're using it as a filter - now let us use it too!