I'm trying to chart the SLA % for a number of services. My source data is a list of incidents recorded against these services.
Each incident occurs on a certain date and has a duration. Aggregating the durations gives me a total incident duration in a given period for a given service.
I created a calculated field which translates the sum of incidents duration into a percentage and defaults to "1" when the value is null:
IF ISNULL(SUM([Effective Duration])) THEN 1 ELSE
1-(SUM([Effective Duration])/2678400) END
This works well when I display the data in a text table.
However when I display the data into a bar chart, the services which had no incidents have no bars on the chart.
How do I force tableau to show a 100% bar for services which had no incidents recorded in a given period?
You would need to have a data source with your list of incident types, and use what we call "scaffolding." There is a list of resources at Data Scaffolding in Tableau, or you can search the forums for much more.
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