In this module you will learn how to use the Tornado Power BI Custom Visual. The Tornado allows you to compare two categories of data vertically similar to a bar chart.
Module 14 – Tornado
- Power BI Custom Visual – Tornado
- Dataset – Pay by Job Title.xlsx
- Completed Example – Module 14 – Tornado.pbix
- The Tornado has a few limitations that you should be aware of before using:
- If there’s a legend value it should only have 2 distinct values
- Each distinct category values is a separate bar with left or right parts
- Alternatively, you can have two measure values and compare them without a legend
This shows a Tornado with two distinct values in the Legend property.
- Under the Format paintbrush there are several options for customizing the appearance of the Tornado.
- From the Data Colors section you can specify what color is used for each distinct value of the Legend.
- By changing the values in the X-Axis section you can manually adjust the scale used to display the values.
- In the Data Labels section you may find it useful the adjust the Text Size, Decimal Places, Display Units, Inside fill or Outside fill.
- The Text Size will adjust the value labels that are appearing inside the Tornado
- Decimal Places will allow you to adjust rounding of decimal points
- Display Units was actually changed for the sample image above to show in Thousands as opposed to the default, which usually shows in Millions.
- Using Inside fill will change the color of the value labels
- The Legend property allows you to adjust the Position, Title, Text size, Color, or Legend Name.
- Using the Group property you can adjust the color of the group label text.
- In addition to these properties you have a set of settings that appears on every visual to adjust the background color, add a border around the visual and lock the aspect ratio.
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