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Category: Power BI

Skewness and Kurtosis in Power BI with DAX

Skewness and Kurtosis in Power BI with DAX

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In this post, I will describe what Skewness and Kurtosis are, where to use them and how to write their formula in DAX. What is Skewness Skewness is a measure of symmetry, or more precisely, the lack of symmetry. A distribution, or data set, is symmetric if it looks the same to the left and right of the centre point. For a unimodal (one mode only) distribution, negative skew commonly indicates that the tail is on the left side of the distribution, and positive skew…

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ssas process partitioning
Performance Benefits of Partitioning in Analysis Services Tabular

Performance Benefits of Partitioning in Analysis Services Tabular

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I previously wrote a post on how to dynamically partitioning tables in SSAS tabular using SQL, but in this short post, I will focus on the performance side of partitioning. What is Partition Partitions split a table into logical partition objects. Each partition contains a portion of the data, partitions can be processed in parallel independent of other partitions or excluded from processing operations if they don’t need to be refreshed. Why partitioning improves the refresh performance The main reason…

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Clustering in Power BI using R

Clustering in Power BI using R

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Since 2016 there’s a built-in feature in Power BI that allows us to automatically find cluster within our data.This is a great feature, however, its main drawback is that whenever we add new data into Power BI the clusters need to be manually recalculated for the new data. In this post, I will show how we can implement clustering in Power BI using R and automatically recalculate the clusters whenever we hit the refresh button. What is Clustering Clustering is the…

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Data Dictionary Using DMV Queries
Data Dictionary Using DMV Queries

Data Dictionary Using DMV Queries

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In this short post, I show how we can integrate a data dictionary using DMV queries within an SSAS tabular model and why we should do so. Why should we have a Data Dictionary within our model? The more complex a model becomes the more documentation we need to have about it. The more measures and complex formulas we have in a model the more calls/questions we have from end-users and thus the less time we can spend on getting…

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Combine Clustered Columns with Clustered Markers
R – Power BI – Add Target Marker To Each Bar in a Grouped Bar Chart

R – Power BI – Add Target Marker To Each Bar in a Grouped Bar Chart

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As of now, in the Power BI Line and Clustered Column chart, we cannot Combine Clustered Columns with Clustered Lines or Markers.

In Power BI the markers all line up over the middle of the cluster instead of overlaying every single column.

So in this short post I share how to create such a visual using R.

AB Testing With Power BI
AB Testing with Power BI

AB Testing with Power BI

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A/B testing, or split testing, is a digital marketing technique that involves comparing two versions of a web page or application to see which performs better.

In this post, I am going to share a step by step guide to implement AB Testing with Power BI.

Power bi dymaic visuals using python
Power BI Dynamic visuals using Python in 1 minute

Power BI Dynamic visuals using Python in 1 minute

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By now there’s plenty of good tutorials that explain how to create your own visualisations in Power BI by using R or Python like the Microsft one here.However, I haven’t seen any articles on how to create dynamic visuals by using Python (or R).So in this post, I’m going to show a very simple and fast way to create your power bi visuals by using python. (Same can be done using R) Goals of this Post Create visuals by using…

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SSAS/Power BI – Take Calculation Groups to the next level with Tabular Editor

SSAS/Power BI – Take Calculation Groups to the next level with Tabular Editor

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Now it’s been a year since the game-changer new calculation groups feature has been released and I just thought that I still haven’t written a post on it. Goals of this Post Use Calculation Groups Use Tabular Editor Advanced Scripting Speed up SSAS/PowerBI model development Create reusbale script Setting up the Environment Power BI: Download here. Tabular Editor: Download here. SQL Server 2019 and later Analysis Services or Azure Analysis Services. At the time of writing this post, Calculation Group…

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Calculation Group in Power BI – Error: Time Calculation Requires selection of exactly one calculation item.

Calculation Group in Power BI – Error: Time Calculation Requires selection of exactly one calculation item.

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I first thought that the recent calculation group feature wasn’t working in a matrix when selecting more than one calculation item from a slicer, until, I realised that all I had to do to fix it was to simply disable the “column subtotals” option. To be honest I find the error message shown by PBI misleading. So if you encounter the error”Time Calculation Requires selection of exactly one calculation item” here is what you have to do to fix it:…

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