I need to summarise a value over 200 digital tags and show it in an Element Attribute. It seems the AF formula data references doesn't work. Which way can i do it?
When you say "200 digital tags" are you referring to tags of type Digital or what point type are those points using?
Is there more information to share about the summary type?
Have you created 200 Attributes with PI Point references or how do you select the points to build the summaries for?
Because you posted your question in "General Programming Languages" are you more interested in a programmatic solution or one based on PI System Explorer or PI Builder?
What type of summary information are you looking for? Average, Max, Min, Stdev, or some other standard measure?
Assuming that you want one of these, probably the easiest approach would be to create an AF element that will contain the summary info, and then have each tag be an attribute of a child element. Then you can create a rollup attribute on the parent element that calculates the summary data you are looking for.
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