in old tag definition we're using calculated tag with exdesc attribute:
event='TagName', (if 'TagName2' <> 0 then 'TagName' else "No Data")
the result is trend of TagName when TagName2 = 1, and in the time period where TagName2 = 0 there is NoData written to the TagName.
Now when we want to do the same in AF Analytics we are using formula:
if 'TagName2' <> 0 then 'TagName' else NoOutput()
the problem is - the AF version to not write enything to tag
Is there a way to achive the same result in AF like it was done in PerEq?