Analytics & Calculations

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Analytics function for Last Good Value

We have come across a number of occasions where we want to bring in the last good value of an attribute as an input to an analytics. But there is no way to do this without additional attributes and analytics. It would be convenient if ...

taterhead247 about 2 years ago in AVEVA™ PI Server / Analytics & Calculations 10 Tell us more

79 VOTE

Trigger AF Analysis Using Future Data

As an engineer, I want to execute analyses when I get a new future data value, so that any forecasts (either via Analysis or via a 3rd party system or via a PI Point update) can trigger analyses.

Guest about 2 years ago in AVEVA™ PI Server / Analytics & Calculations 12 No status

71 VOTE

Periodic trigger monthly and yearly

I would like to have monthly and yearly periodic trigger for Analysis-Expression and Event Frame Generation. Currently I have to use the daily trigger and check in the analysis if the month or the year changed. In case of “false” there is no outpu...

Guest about 2 years ago in AVEVA™ PI Server / Analytics & Calculations 8 No status

64 VOTE

Variable True For parameter for Event Frame Analyses

As an AF Administrator, I want to configure an Analysis Template for Event Frames with a True For parameter that would have it's value stored in an AF Attribute (configuration item). The use case is that elements built from the template will have ...

Guest about 2 years ago in AVEVA™ PI Server / Analytics & Calculations 2 No status

62 VOTE

Make Analysis trigger on different inputs when timestamps of input tags are equal

If an Analysis is triggered on "Any Input", and the inputs have the same timestamp but come in after each other, the Analysis is only triggered at the first input. For example: We have a simple Analysis which summarizes 2 tag. The first tag comes...

ArieVanBoven about 2 years ago in AVEVA™ PI Server / Analytics & Calculations 11 Evaluating

60 VOTE

Add Six Sigma calculations

As a quality engineer, I need the ability to calculate Six Sigma SQC statitistics for key quality attirbutes. Cp, Cpu, Cpl, Pp, Ppk

Guest about 2 years ago in AVEVA™ PI Server / Analytics & Calculations 1 No status

59 VOTE

PI Analysis Performance Checker

Currently PI Analysis Service has a built-in Statistics tool in PI System Explorer. It is able to show statistics regarding Evaluation and Calculation Lag as well as Skipped Evaluations and some other important information. PI System Explorer ...

Guest about 2 years ago in AVEVA™ PI Server / Analytics & Calculations 1 No status

59 VOTE

More functions to support operations on arrays

The arrays in Expression and Event Frame Generation analyses are useful, but use cases are emerging where more functions are needed to reduce/calculate the arrays in more streamlined fashion. For example, Concat function should support array of ch...

Guest about 2 years ago in AVEVA™ PI Server / Analytics & Calculations 17 No status

57 VOTE

Percentile function

As a user of analyses, I would like to have a Percentile function so that I can filter out atypical events when doing summary calls. The function would look like this: Percentile('attribute', 'timerange', value). This is related to enhancement req...

Guest about 2 years ago in AVEVA™ PI Server / Analytics & Calculations 4 No status

55 VOTE

Improve Asset Analytics Data Cache performance to handle large scale changes

There is a considerable amount of downtime in our system (20+ minutes) when a template change is performed. The root cause is a limitation on how the analysis service handles the removal of AF Attributes from the Data Cache. Due to this limitation...

Guest about 2 years ago in AVEVA™ PI Server / Analytics & Calculations 2 Evaluating

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