I don't think the creator is on Bluesky, but saw this pop up in my LinkedIn feed for #30DayMapChallenge and it was just too cool to not share with the #dataviz feed here. What a fun concept! 🪩
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#30DaymapChallenge
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Day 66. Disco Earth 🪩
#30DayMapChallenge 2023 D11 Retro. ETOPO1 drives bg + reflections; InstancedMesh mirror quads, Three.js/WebGL. Style study, not analytics.
🔗 maptheclouds.com/playground/3...
#100DayMapChallenge Day 66/100 #NOAA #Animation
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At #SOTMUS2026, take a visual tour of Madison through the lens of #OSM with Stephen Kennedy. Based on the #30DayMapChallenge, this session highlights several maps of our host city. He’ll dive into how OSM data powers visualizations.
Full schedule: openstreetmap.us/events/state...
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At #SOTMUS2026, take a visual tour of Madison through the lens of #OSM with Stephen Kennedy. Based on the #30DayMapChallenge, this session highlights several maps of our host city. He’ll dive into how OSM data powers visualizations.
Full schedule: openstreetmap.us/events/state...
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Did you know the map on the UN flag is an Azimuthal Equidistant projection of the world map centered on the North Pole? 🇺🇳
I re-created it with D3.js and learned to customise the graticule.
observablehq.com/@eleonore9/un-flag-map
Belated #30DayMapChallenge 2025 entry for "projections"
#sciart
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This was a great conversation (Andy has such an encouraging and engaging presence) with interesting examples from Nicola and Ansgar. Well worth a listen.
I did the #30daymapchallenge twice and it almost broke me, but resulted in a wealth of learning experiences and body of work I still draw upon.
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NEW EPISODE! I chatted with @nrennie.bsky.social & @ansgarw.bsky.social about the #30DayMapChallenge and took a close look at 5 of their respective works.
visualisingdata.com/2026/02/expl...
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Banner for episode
Coming v soon... my new episode with @nrennie.bsky.social and @ansgarw.bsky.social to explore some of their work as part of the 2025 #30DayMapChallenge
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#30DayMapChallenge de #IGN : 30 jours, 30 cartes inédites pour célébrer la #créativité #cartographique !
www.ign.fr/mag/30DayMap...
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I love the idea of replicating existing maps, but I rarely end up doing it. I've thought about promoting something like the #30DayMapChallenge, but in this version people would spend the month doing a few duplications.
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Map of the UK showing historic counties, coloured such that no two adjacent areas are the same colour, using four colours in total.
I did something similar for the #30DayMapChallenge a few years ago (the MapColoring package did all the hard work though: github.com/hunzikp/MapC...)
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Busy couple of weeks!
Just finishing my preparation for today's Explore Explain episode recording with @nrennie.bsky.social & @ansgarw.bsky.social as we discuss their amazing work for the #30DayMapChallenge
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My company has participated in the #30DayMapChallenge in recent years. Maybe some maps here would be suitable.
geoportaal.maaamet.ee/eng/spatial-...
In addition, here is my personal gallery of the maps made during the challenge: andreskasekamp.github.io/30DayMapChal...
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While I love the #30DayMapChallenge, I couldn't fit it in my schedule. I like the idea of making for-fun-maps based on fixed themes. I created a list of 52 subjects for myself to use over the course of this year to create maps that I can share. You can find it on 52maps.org and join me. #52maps
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Wrapping up 2025 with my #30DayMapChallenge, finished in two months. Grouped results show #LEGO leading with 12 maps, traditional #GIS at 11, craft and painting at 6, plus one #AI generated map (1/3 entries used AI tools). Looking forward to my journey of #cartography in 2026! Happy New Year! 🎨🗺️
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#30DayMapChallenge | Day 14 OSM | This map challenges the idea that streets belong to cars, even so-called sharrows that still feel unsafe. Using an inverted speed-limit hierarchy, fast roads fade. Bold bike infrastructure reveals how broken and fragmented the biking network is.
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#30DayMapChallenge | Day 30 Makeover | During #NACIS 2025, I tried colored-pencil sketching and drew my own #Yosemite map on the gallery panel. Recently, I revisited it by recoloring with watercolor to strengthen the shading and adding some labels. ⛰🖌 Original map: cartoguophy.com/maps/yosemit...
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#30DayMapChallenge Day 29 - Raster
Daytime/Nighttime temperature difference in Australia, Jan 2025
Wanted to map something about the country after my trip last month, and land surface temperature is always a good starting point for exploring a place you don't know much about
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We created a lot of quick maps during the #30DayMapChallenge! When I was a GIS environmental consultant, I created templates for most of my maps. There was very little time for cartographic flair, so I did what I could via trial and error. This was before I took any carto classes.
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A map of Germany in a grid with dots showing the pig farming density in each cell. The map reveals a strong concentration of pig farming in the Northwest (West of Lower Saxony, North of North Rhine-Westphalia).
The German “Pig Belt” is a highly specialised pig farming region in parts of Lower Saxony and North Rhine-Westphalia, accounting for around 60% of the country's pig population.
#30DayMapChallenge | Day 16 - Cell #rstats #ggplot2
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I revisited the Long Night map I made from the #30DayMapChallenge and expanded it into a poster. Changing the size of a map never goes as smoothly as I think it should. 😂
#gis #cartography #maps
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#30DayMapChallenge | Day 26 Transport | After Atlanta, I made another #LEGO transit map of #Madison Metro Rapid BRT. Smooth lines failed on diagonal routes, so I returned to a pixelated version. I spent really long time designing the capitol building, and hope it serves as the finishing touch! 😊
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#30DayMapChallenge | Day 29 Raster | Another experiment in large scale thematic #LEGO mapping. With a 0.1-mile grid, I built a citywide 3D elevation map and colored the top tiles of each cell by category. Colors reference the #Lawrenceville 2045 Character Areas map (www.lawrencevillega.org/241/Maps)
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This is me when I get confused about map projections during the #30DayMapChallenge! 😅
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#30DayMapChallenge | Day 18 Out of This World | #LEGO #Moon Map. It's fun mapping a totally different landscape with my LEGO approach: abstract, cute, yet roughly accurate. With no oceans on the Moon, I used a uncommon color scheme for topographic maps. Source: Wikipedia #Selenography
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I'm really looking forward to chatting with @visualisingdata.com alongside @ansgarw.bsky.social all about the #30DayMapChallenge!
#RStats #DataViz
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Then S6E6 will be a #30DayMapChallenge special with two fantastic guests, @nrennie.bsky.social and @ansgarw.bsky.social, joining me to explore some of their amazing map submissions for this brilliant and unique challenge, which was held during November.
visualisingdata.com/podcast/
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#30DayMapChallenge | Day 16 Cell | #LEGO Map of Georgia Bulldog | Big congrats to #Georgia #Bulldogs football team for beating Alabama to win the #SEC Championship! 🏈
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Latest TUG is youtu.be/RFXKyiVFDXA
COMMUNITY SHOWCASE: Agata Ketterick.
PRESENTATION: Rod Sardari , "Discover, Connect, Map: Spatial Insights with Esri Living Atlas in Tableau"
AND #30DayMapChallenge Highlights
LOTS of awesome content @ youtube.com/@TeamDataFam #DataFam
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