Welcome! Power BI User Group (PUG) Copenhagen

All things R with Power BI David L. Bojsen Cloud Solution Architect, Advanced Analytics and AI Microsoft Denmark

Meet Your Presenter David L. Bojsen Previously application/integration developer Past 11 years focus on data and BI Past 2 years focus on Cloud, IoT at Microsoft aka.ms/davidb

Session Agenda Session objectives What is R Setting up your environment Data manipulation/enhancement thru R Visualizing data thru R Support for R in the Power BI Service When to use R in Power BI

Poll How many consider themselves a data scientist? a BI professional? a BI superuser?

Poll How many are completely new to R?

All things R with Power BI At the end of this session, you should be better able to… Understand the possibilities for using R in Power BI Know how to go home and set up your own environment

What is R Wikipedia: R (programming language)

What is R “R is a language and environment for statistical computing and graphics” Capabilities include Statistical Analysis Modeling and Data Visualization

What is R Source: http://www.kdnuggets.com/2016/06/r-python-top-analytics-data-mining-data-science-software.html

Setting up your environment

We will need... Power BI Desktop An R installation – suggest Microsoft R Open (Optional) An R IDE R Studio R Tools for Visual Studio (RTVS) Update configuration in Power BI Desktop

Demo

Data manipulation/enhancement

Going all in - the R script data connector Running R Scripts in Power BI Desktop

Things to be aware of Reference all dependent packages Only data frames are imported (not complex/vectors) All data frames available in navigator NA is translated to NULL 30 minute time out

Demo

Partial approach - R script as part of query editor Using R in Query Editor

Demo

Data visualization

R visuals from Office store Advanced Analytics Custom visuals for Power BI

Your own custom R visualizations Create Power BI visuals using R

Current limitations Data size limitations – data used by the R visual for plotting is limited to 150,000 rows. If more than 150,000 rows are selected, only the top 150,000 rows are used and a message is displayed on the image. Calculation time limitation – if an R visual calculation exceeds 5 minutes the execution times out, resulting in an error. Relationships – as with other Power BI Desktop visuals, if data fields from different tables with no defined relationship between them are selected, an error occurs. R visuals are refreshed upon data updates, filtering, and highlighting. However, the image itself is not interactive and cannot be the source of cross-filtering. R visuals respond to highlighting other visuals, but you cannot click on elements in the R visual in order to cross filter other elements. Only plots that are plotted to the R default display device are displayed correctly on the canvas. Avoid explicitly using a different R display device.

Interactive R custom visuals Interactive R custom visuals support is here!

Your own interactive R custom visuals Building R Powered Custom Visual with HTML output

Bringing it from your machine into the Power BI Service

What is supported in the Power BI Service Data manipulation / enhancement Only supported with the On-Premises data gateway setup in personal mode Visuals / interactive visuals A subset of CRAN packages are supported R packages in the Power BI service You can request packages to be added

Demo

When to use R in Power BI

When to use R in Power BI No dedicated modeling capability (read: small R implementations) Robust visualizations; beyond what Power BI can provide Augment Power BI, don’t try to replace it Data manipulation beyond DAX capabilities Integrating R modeling capabilities into PowerQuery

Questions?

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