Featured Map: Isochrones (areas reachable within 2 hours from larger Japanese cities) by HeiGIT’s openrouteservice for bigger cities on the main islands of Japan, Marcel Reinmuth’s submission for Day 3 (“Polygons”) of Topi Tjukanov’s Twitter event #30DayMapChallenge. Map derived from OpenStreetMap … Read More
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![A listing of last year’s prompts from Topi Tjukanov’s Twitter event #30DayMapChallenge.](https://heigit.org/wp-content/uploads/2023/05/image-20230509-102059.png)
2022 #30DayMapChallenge Round-Up Part 3: Home Sweet Heidelberg
Featured photo: A listing of last year’s prompts from Topi Tjukanov’s Twitter event #30DayMapChallenge. This past November, our teams at HeiGIT and GIScience participated in Topi Tjukanov’s Twitter event #30DayMapChallenge, where mappers display their creativity and ingenuity with a set … Read More
![The deleted map: It displays all deleted elements withing the analysed areas (red). Gray rectangles are deleted buildings.](https://heigit.org/wp-content/uploads/2023/05/Bildschirmfoto-vom-2023-05-12-18-41-11.png)
2022 #30DayMapChallenge Round-Up Part 2: Deleted Maps
Featured photo: The deleted map displays all deleted elements within the analyzed areas (red). Gray rectangles represent deleted buildings. This past November, our teams at HeiGIT and GIScience participated in Topi Tjukanov’s Twitter event #30DayMapChallenge, where mappers display their creativity … Read More
![](https://heigit.org/wp-content/uploads/2023/05/7.30DoM.jpg)
#30DayMapChallenge Round-Up Part 1: Germany Three Ways
Featured Image: The peaks of Germany identified by curvature in N/E direction, Jakob Schnell’s contribution for Day 7 (Raster) of the #30DayMapChallenge. This past November, our teams at HeiGIT and GIScience participated in Topi Tjukanov’s Twitter event #30DayMapChallenge, where mappers display … Read More