Analytics & Calculations

The Analysis server uses the PI Buffer subsystem in order to apply Exception and Compression testing on the results of Analysis. However, when deleting data (either through Recalculation or deleting data via Powershell or PI SMT, or whatever) the ...

The Date and time format in PI System Explorer's Preview-Results pane are not displayed according to the end user's operating system date & time format defined. This is an inconsistent behavior to that of PI System explorer in general sine the...

I would like be able to use a variable as index instead of an integer number in \Elements[@index=variable] so I can always get attribute values of my child elements eventough the relation to my child element isn't always the same.

It would be nice if the configuration of an analysis was saved in memory when switching between types (expression, rollup, event frames or SQC). This way if a user accidently changes type, their work would not be lost.

During bulk recalculation or backfill, enhance the PI Asset Analytics engine to prioritize the calculation of analyses that act as inputs into higher level "daisy" chain analyses. This would address performance issues at large scale, as described ...

I find myself making analytics on child elements which by themselves have limited value, but are needed to get rollup analyses to work. This adds complexity to the design of AF. Two ideas would improve this: 1) Count # of attributes that meet a c...

Some Analytics fail due to a tag not existing. It is possible to test for a Bad value via the BadVal() function, however, this does not work if the tag does not exist. Consequently the equation will not run. This caused me many hours of debugging ...

I would like to create a custom AFAnalysisRule that allows us to leverage the resources on the PI Analysis Service to perform calculations that the Analysis Service currently cannot perform. These calculations include matrix operations, array oper...

We have many calculations following this basic pattern - take recorded values of one attribute, apply a filter (using FilterData), then retrieve values of a second attribute at the filtered timestamps of the first attribute. Currently, we cannot r...

For unitless values you can assign a unit of measure by using the Convert() function. To further convert this to another UoM in the same class you need to nest another Convert() function. For example, Convert(Convert(3600, "s"), "h")) It would sim...