How can I use PI data link to specify the summary type of "Population Standard Deviation" using Calculated Data of PI Data Link? The AF.NET SDK clearly shows this as a summary method and I would like to use it from PI Data Link.
This should be the Calculation mode.
It is missing the Population Standard Deviation. That enumeration is the basis of my question.
Can you provide a screenshot of what you have attempted so far?
A screenshot of my code in debug mode where the parameters are visible or PI Data Link? I tried using Pop Std Dev and usually got back the same results as Std Dev. My QC engineer says that sometimes they are different so she must know of a use case that I don’t.
I was thinking DataLink but why not both? Consider you are asking the PI Community to provide help to you on a specific issue. The more details you can provide that can help others better understand what you are doing would seem to be in your best interest for receiving a higher quality answer soon rather than later.
The attribute name is not fully shown, but I do see you have standard deviation appear in your pick list. I don't see the full name of your attribute (I am familiar with Tanks a Million database). Is there anything you can elaborate upon your data item that is causing standard deviation not to appear? E.g. what is its data type? what is its data reference?
Retrieving data ...