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I realize that I use the word «arbitrary» a lot on my blog posts, but then I think, «so what?». Anyway, this blog post is mostly a remake on another blog post, the one called «A truly dynamic tooltip«. When I wrote that blog post, I had struggled a lot to get the effect I wanted, but even though I learned a lot in the process I ended up convinced that it was better to stay out of calculation groups when building such a chart. Well, this is no more. Calculation groups, are ususal, are just fine. You just need to know how to use them.

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I thought I would let the blog rest for a few days, but I figured out I would write a short one on a topic that Rick brouhgt up on LinkedIn: Controlling Calculation Items with RLS. I lived under the impression that being a table you could just apply RLS like in any other table, but he told me that Power BI throws and error when you try, and sure enough I got the same result. Tried cheating by creating a calculated column in the Calculation group, but the same result. But then I remembered the technique I used on my article on arbitrary two row header tables, and I gave it a try. It does work, so if you’re interested, keep reading. Continue Reading..

I know, I’m back again at validations, but this time is a bit different. Recently I’ve found myselft in a project where the data that was coming in was not fulfilling the sepcified requirements. We tend to thing that data that comes out of a system will always be pristine, but well, at least in one instance it was not. There were some validations set in place in Access + VBA. But then, even if the access was set out to execute every day you have to go in, check the output, and each file had it’s own validation access. Well, not great. Since the patience was running thin (errors kept apprearing in different places) it was decided that a full validatino check was to be set out. Or at least something much deeper than we had now. I figured out that we might be able to build something in Power BI. Data Validation with Power BI. Odd? yes, but hey, you gotta do what you gotta do.

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