Power BI Line Chart with interactive log & linear scales

As an end-user of a Power BI report, a chart that looked great at first might look not so great once you start applying filters or using slicers. Very large values in the data might throw off the scales and now your line chart might be suddenly all squeezed at the top or the bottom. Does any of the above sound familiar?

Usually it’s the report designer who has all the power, this article is about giving more power to Power BI end users…

End users’ ability to change the scale, appearance or formatting of that chart is limited. That’s why I started creating the Mi4 Line Chart Power BI custom visual that lets you switch scales on the fly, and eventually have more overall control of the visual without having to edit the report.

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Power BI Switching between Logarithmic and Linear Scales

Welcome to the second post in our miniseries: “Are You Developing Power BI Reports the Right Way?” In the two-part series we are designing a sample Power BI report visualizing the weather on Mars and using some real world techniques.

The highlights of our first post were:

    • Getting data from Mars
    • Using a JSON file as a data source
    • Performing operations in the “Get Data” phase using M
    • Implementing a Dynamic Slicer
    • Using Chiclet Slicer and Dummyimage to create a Legend Slicer
    • Making design decisions

Note: Due to the popularity of this article, we have developed a custom Power BI line chart visual that has built-in support for allowing the end users to switch the axis scales, read about it in @Talal’s post. and viewing them in Power BI Desktop.

This post will focus on:

    • Switching an Axis Between Logarithmic and Linear Scales via a Slicer
    • Adding a Date Slicer
    • Using a Dark Theme

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Power BI Legend Slicer from a JSON File with M and DAX

Data is king, or queen depending on your household dynamics. How you communicate that data and its impact to your clients can help or hurt your business. Both your short and long term relationships can hang in the balance, which is why the quality and delivery of your Power BI reports are everything.

Case Study: Power BI Report Development

In this blog post mini-series, we will be taking you through the process of creating a Power BI report. The demo report draws from one we created for a client as part of a larger dashboard project. It implements a line chart to visualize the weather on Mars.

The actual report we developed had nothing to do with Mars, space, or weather, but you should find it useful to understand how real-life issues can be resolved and optimizations can be employed. The first post in the series focuses on data-prep and implementation of a legend slicer.

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