Latest Power BI and AI articles from RADACAD team
In previous post you’ve learned about data structures in R. In this post I’ll explain Data Gathering, Data Understanding, and Data Cleaning, which are the main tasks of data management that need to be done before any machine learning process. In this post I will explain how to fetch data from Spreadsheet and SQL Server. Read more about R Data Gathering from Spreadsheet and SQL Server[…]
Column chart and Bar chart are two of the most basic charts used in every report and dashboard. There are normally two types of these charts: Stacked, and Clustered. At the first glance they seems to do same action; showing values by categories ans sub categories. However, they are different. Your storytelling of data would Read more about Stacked Chart or Clustered? Which One is the Best?[…]
Power BI users Sorting in most of the visualizations, you can choose to sort ascending or descending based on specified data fields. However the field itself can be sorted based on another column. This feature called as Sort By Column in Power BI. This is not a new or advanced feature in Power BI. This Read more about Sort By Column in Power BI[…]
Every programming language has specific data structure. R language also has some predefined data structure that each of them can be useful for specific purposes. For doing machine learning in R, we normally use data structure such as Vector, List, Data Frame, factors, arrays and matrix. In this post I will explain some of them Read more about R Data Structures for Machine Learning[…]
Date Conversion is one of the simplest conversions in Power Query, however depends on locale on the system that you are working with Date Conversion might return different result. In this post I’ll show you an example of issue with date conversion and how to resolve it with Locale. In this post you’ll learn that Read more about Flawless Date Conversion in Power Query[…]
Combining two queries in Power Query or in Power BI is one of the most basic and also essential tasks that you would need to do in most of data preparation scenarios. There are two types of combining queries; Merge, and Append. Database developers easily understand the difference, but the majority of Power BI users Read more about Append vs. Merge in Power BI and Power Query[…]
2016 was the year of raising Power BI in my opinion, Here is the list of top 10 blog posts that you clicked mostly in this year; How to Do Power BI Mapping with Latitude and Longitude Only. This post was written when Power BI didn’t supported latitude and longitude only for map visualization. Nowadays Read more about Top 10 Blog Posts of 2016[…]
I’ve talked about Data Preparation many times in conferences such as PASS Summit, BA Conference, and many other conferences. Every time I talk about this I realize how much more I need to explain this. Data Preparation tips are basic, but very important. In my opinion as someone who worked with BI systems more than Read more about Data Preparation; First and Foremost Important Task in Power BI[…]
Filtering in Power Query component of Power BI is easy, however it can be misleading very easily as well. I have seen the usage of this filtering inappropriately in many cases. Many people simply believe in what they see, rather than seeing behind the scenes. Power Query filtering is totally different when you do basic Read more about Warning! Misleading Power Query Filtering[…]
I have written a lot about Power Query M scripting language, and how to create custom functions with that. With recent updates of Power BI Desktop, creating custom functions made easier and easier every month. This started with bringing Parameters few months ago, and adding source query for the function in November update of Power Read more about Custom Functions Made Easy in Power BI Desktop[…]