In this module, you will learn how to use the Histogram, a Power BI Custom Visual. A Histogram is a column chart which shows the distribution of occurrences divided into categories, called bins. This type of chart is useful for estimating density and discovering outliers.
Module 06 – Histogram
The number of bins can be adjusted. In this case, increasing the bin size exposed a set of outliers in the data found in the last bin.
- The Histogram automatically performs a discretization process to create bins for continuous values.
- You do have the option to manually overwrite the number of bins that are automatically generated for you.
- This chart type does support cross filtering with other visuals you may use on the report.
- Under the Format paintbrush the options that are particularly interesting for the Histogram can be found under the Data labels, Data colors and General setting menus.
- There’s not much in the Data labels properties but you can adjust the number of decimal places used on the labs.
- Typing a value of 2 here will display 2 decimal points on your data labels. 0 or blank would show no decimal places.
- Under the Data colors properties you have a pretty self-explanatory option to change the color of the Histogram bars to your preferred color.
- In the General properties section you have typical option to control the size and location of the visual but there are also settings here to control Histogram specific features.
- By turning off Frequency (On is the default) it will change the chart to show a scale based on density instead of frequency.
- The Bins option allows you to overwrite the default discretized bins that are created tell the Histogram a specific number of bins you would like. Changing this value can sometimes increase the chance of noticing an outlier in the data.
- 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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You will always be able to find this video module and advanced viewing of future modules on the Pragmatic Works On Demand Training platform.