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30 Days of Maps Day 26 - Map Projections

· One min read
James Dales
James Dales
Co-founder of Tekantis

Day 26 of the #30DayMapChallenge brings us to the theme of "Map Projections" - Explore different map projections and how they distort the world. Whether it's focusing on the classic Mercator, the Peters projection, or a more obscure one like the Waterman Butterfly, today is about playing with how we represent the round Earth on flat surfaces.

Icon Map Pro currently only supports the Web Mercator projection, however I recently discovered the Dirty Reprojectors tool that takes a shape file and reprojects it to another reprojection, but using fake longitude and latitude coordinates. So I've used this tool to reproject a map of the US states and counties and show them using the US Albers projection within Icon Map Pro.

This map has 2 levels of drill-down. At the top level it shows states, and you can then use the icons in the top right to turn on drill down mode, and drill into county level. A Power BI report page tooltip shows the result for that specific area.

If you'd like to see how the report was built, you can download it here.

Data from https://github.com/tonmcg/US_County_Level_Election_Results_08-24