Custom Visual

2025 Week 50 | Power BI: First Snowfall Scatterplot

Introduction The first snowfall in Denver was unseasonably late this year. So I got curious about the data and decided to make a visualization. While this one does communicate with data, it’s taking a bit of artistic license.  This is your challenge as well: create a first snowfall scatterplot with some wintery visual effects. You …

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actual scale sea level rises

2025 Week 44 | Power BI: Utilising HTML to create actual scale charts

Introduction In this week’s challenge we are going to try to create a chart on rising sea levels where the y-scale of mm will display on screen in physical mm. You can try this with whichever custom visual you like, but the example laid out below will be for the utilisation of the HTML Content …

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Area between loess

2025 Week 36 | Power BI: Area between timeseries smoothing

Introduction This weeks challenge is an extension of week 21, whereby we will create a timeseries smoothing over lines rather than scatter points. The challenge here is to emphasize the difference between two populations, whilst having the details visible, but not prominent – getting the opacity/strokedash (for overlapping lines) and colour contrast (for perceptibility) right …

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2025 Week 21 | Power BI: Scatterplot / Timeseries Smoothing

Introduction When looking at timeseries data, we may encounter high variability from one week to the next, creating highly jagged and difficult to read charts. There are a number of techniques to smooth the lines to better depict trend. Some may use rolling averages, others, like YouGov, use LOESS regression. https://yougov.co.uk/topics/society/trackers/how-often-brits-exercise In this weeks challenge …

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