If I mention Power BI to fellow data scientists I often get strange looks. However, I quite like the tool, it is an easy and fast way to share results, KPI’s and graphs with others. With the latest release, Power BI now supports interactive R graphs, and they are easy to create as well.
Steps to follow
1. Install Node.JS from here and then you can install the power bi tools with:
>npm install -g powerbi-visuals-tools
2. Create a new custom R visual:
>pbiviz new sunburstRHTMLVisual -t rhtml
3. This will create a directory sunburstRHTMLVisual. In that directory, edit the R script file script.r. It’s a one-liner to create a sunburst graph with the sunburstR package.
Values is the name of the input data frame, the data that is received from within the Power BI desktop application.
4. Now create the custom R visual as package with the following command: (issue this command inside the directory sunburstRHTMLVisual)
5. Inside the sub folder dist you will now find the file sunburstRHTMLVisual.pbiviz, this can be used in Power BI. Open the Power BI desktop application and import a custom visual from file. Select the sunburstRHTMLVisual.pbiviz file
That’s it, you’re done!
The resulting graph in a dashboard
To use the visual you will need a data set in power bi with two columns, one with the sequences and one with the number of occurrences of the corresponding sequence.
Click on the icon of the custom R visual you’ve just imported and select the two columns to get the interactive sunburst graph. Once the graph is created, you can hover over the rings to get more info, and you can turn on/off the legend.