Book Image

Extending Power BI with Python and R

By : Luca Zavarella
Book Image

Extending Power BI with Python and R

By: Luca Zavarella

Overview of this book

Python and R allow you to extend Power BI capabilities to simplify ingestion and transformation activities, enhance dashboards, and highlight insights. With this book, you'll be able to make your artifacts far more interesting and rich in insights using analytical languages. You'll start by learning how to configure your Power BI environment to use your Python and R scripts. The book then explores data ingestion and data transformation extensions, and advances to focus on data augmentation and data visualization. You'll understand how to import data from external sources and transform them using complex algorithms. The book helps you implement personal data de-identification methods such as pseudonymization, anonymization, and masking in Power BI. You'll be able to call external APIs to enrich your data much more quickly using Python programming and R programming. Later, you'll learn advanced Python and R techniques to perform in-depth analysis and extract valuable information using statistics and machine learning. You'll also understand the main statistical features of datasets by plotting multiple visual graphs in the process of creating a machine learning model. By the end of this book, you’ll be able to enrich your Power BI data models and visualizations using complex algorithms in Python and R.
Table of Contents (22 chapters)
1
Section 1: Best Practices for Using R and Python in Power BI
5
Section 2: Data Ingestion and Transformation with R and Python in Power BI
11
Section 3: Data Enrichment with R and Python in Power BI
17
Section 3: Data Visualization with R in Power BI

The basics of linear programming

Linear Programming (LP) algorithms are adopted in all those areas where optimization, and therefore the economy of resources, is critical to the continuation of activities. In order to understand what this is all about, you need some math. Let's brush up on some of the geometric concepts we encountered during our youthful studies.

Linear equations and inequalities

We all at least once in our lives have encountered the term linear equation. A linear equation, in its simplest sense, consists of a mathematical relationship between two variables, x and y, in the form ax + by + c = 0, which on the Cartesian plane identifies a straight line:

Figure 10.14 – Representation of the linear equation 2x + y = 2

Evidently, the variables involved in a linear equation can be more than two. The representation of a linear equation is possible as long as we have three variables (the famous three dimensions we can see). In this...