Differences

This shows you the differences between two versions of the page.

--- alarm_analysis:meta_tags [2023/01/26 12:10] – su
+++ alarm_analysis:meta_tags [2023/12/29 13:40] – su
@@ Line 1: / Line 1: @@
-<html>
+====== Alarm Analysis Meta Tags ======
-<span style="font-size:150%;"><b>Meta tags</b></span>
-</html>
-Meta tags are used to perform various aggregations and calculations in order to retrieve results for statistical analysis or user presentation. Alarm analysis meta tags allow A&E data KPIs to be queried and visualised just like any process data source. View a full list of KPIs and detailed information on how to use meta-tags [[ https://github.com/intelligentplant/IAS-Power-BI-connector |here]].
+The KPIs and metrics that make up the Alarm Analysis reports can be queried via //meta tags//, meaning Alarm Analysis data can be queried and visualised just like any other process data source. A good example of this is Power BI, where you may wish to create a bespoke Alarm Analysis report combined with other data sources.
+For a full list of meta tags, refer to the [[https://github.com/intelligentplant/IAS-Power-BI-connector|IAS Power BI Connector Help Page]]
+**Not all Meta Tags are Discoverable**
+While Power BI allows free text entry when configuring data queries, others apps such as Gestalt PnID and Trend restrict users to a "search and select" dialog. Generally, this makes UI interaction simpler, however "meta tags" are not constructed like regular tags and may not be available for search. Some meta-tags are dynamic and hold parameters which are interpreted by the Alarm Analysis data source.
+For example,
+  Oil Co/Osprey/ALM BA report/3.priority
+This above meta tag requests the priority of the 3rd most frequently occurring Alarm on the Oil Co Osprey asset. Clearly this is not a value you would expect to interrogate like a regular process data tag, however there may be cases where it is required.
+If explicit tag entry is not permitted in an app, and the meta-tag is not available in search, it can be manually added to the Alarm Analysis Tag Index. For more information, refer to: [[alarm_analysis:How to add a "Meta Tag" to an Alarm Analysis Tag Index]]