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Map of the Week
The Auschwitz Exhibition This past weekend I saw a traveling exhibition in Boston about the Auschwitz concentration camp. It...
11 months ago
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11 months ago
This past weekend I saw a traveling exhibition in Boston about the Auschwitz concentration camp. It contains over 700 objects from shoes to gas masks to implements of torture and experimentation. The exhibit was co-produced by the Auschwitz-Birkenau State Museum and has been in...
Map of the Week
A Blue Map of China This past weekend I finally got to the Leventhal Map Center at the Boston Public Library to see...
11 months ago
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11 months ago
This past weekend I finally got to the Leventhal Map Center at the Boston Public Library to see their exhibit, Heaven and Earth: The Blue Maps of China on one of its final days. Yes, I should have visited months ago when I could have encouraged readers to see it but though they...
Transit Maps
Submission – Unofficial Map: Improved Cercanías Madrid Map by Jace Submitted by Jace, who says: A while ago I saw your review of the Cercanías Madrid [our 2022 review...
12 months ago
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12 months ago
Submitted by Jace, who says: A while ago I saw your review of the Cercanías Madrid [our 2022 review is here – Cam], and, as a regular user of the system, I too find the map quite bad: Uneven distances between lines, mismatched fonts in the route bullets, and overall lack of...
Transit Maps
Submission – Unofficial Map: Arendal Region Transit Map, Norway by Hazael Hi! I made this transit diagram myself. I saw there was no “real” map with all the stations for the...
a year ago
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a year ago
Hi! I made this transit diagram myself. I saw there was no “real” map with all the stations for the region of Arendal in Norway, so I decided to do this project. I would love to read your comments and criticisms! Transit Maps says: There’s a lot to like about this diagram – a...
Adventures In...
North Arrow Necessity Can a map still be considered a map if it doesn’t have a north arrow? Yes. A north arrow is an...
a year ago
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a year ago
Can a map still be considered a map if it doesn’t have a north arrow? Yes. A north arrow is an optional map accompaniment and you should think critically about your map to determine for yourself if it needs a north arrow or not. For what it’s worth, often a map should not have a...
Transit Maps
Submission – Historical Map: Relief Map of Street Railway System in Pittsburgh and Vicinity, 1910 Submitted by Marc, who says: Hi ! I enjoy the historical maps, especially. Here’s my all-time...
a year ago
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a year ago
Submitted by Marc, who says: Hi ! I enjoy the historical maps, especially. Here’s my all-time favorite historical map — a hand-made relief map of the Pittsburgh streetcar system, from 1910. Transit Maps says: Oh, I just love this, Marc! This fantastic map was included as part of...
Adventures In...
Vintage Retro Old-School 1890s Basemap for ArcGIS Pro Here’s how to stack up some tile layers and blend them up to concoct a basemap that wouldn’t look...
a year ago
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a year ago
Here’s how to stack up some tile layers and blend them up to concoct a basemap that wouldn’t look out of place in 1890. Except that you wouldn’t have anywhere to plug in your monitor so it would be hard to show it to people back then. Ok bring a small generator. Wait, all these …
Transit Maps
Submission – BART “Heat Map” by Harsha Devulapalli Submitted by Harsha, who says: I’ve been a big fan of your blog for over a decade. Recently, I had...
a year ago
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a year ago
Submitted by Harsha, who says: I’ve been a big fan of your blog for over a decade. Recently, I had the opportunity to replicate the BART transit map for a data visualization in a story I wrote for the San Francisco Chronicle. I would love to hear your thoughts on it! Transit Maps...
Adventures In...
How to make this thematic map, and stuff One of the great joys of working here at Esri is the opportunity to collaborate with amazing people....
a year ago
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a year ago
One of the great joys of working here at Esri is the opportunity to collaborate with amazing people. Recently I had the opportunity to present at the User Conference about thematic mapping, with Sarah Bell and Kenneth Field. It was a lot of fun and we all surprised each other...
Twelve Mile Circle –...
England, Day 10 (More Typical London) Unlike the previous day, we focused our final full London day on places more regularly associated...
a year ago
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a year ago
Unlike the previous day, we focused our final full London day on places more regularly associated with typical tourists. Sometimes we do that. Occasionally I displayed my normal geo-oddity proclivities but mostly it was about cramming as much as possible into the hours before...
Transit Maps
Submission – Fantasy Map: New York Regional Rail Concept by James G Submitted by James, who says: I created this map based on various concepts (mainly the work of Alon...
a year ago
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a year ago
Submitted by James, who says: I created this map based on various concepts (mainly the work of Alon Levy) for through-running regional rail in the New York region. This network would integrate all of the current commuter rail networks, increasing frequencies to metro-like levels,...
Adventures In...
Detect and measure wildfires with Sentinel-1 Explorer Our human visual systems collect light from a pretty narrow slice of the electromagnetic spectrum....
a year ago
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a year ago
Our human visual systems collect light from a pretty narrow slice of the electromagnetic spectrum. But there is so much more light to see. Radar systems use photons with much longer wavelengths that can break through clouds and smoke, and because the energy is sent from the...
Twelve Mile Circle –...
England, Day 9 (Atypical London) Before we left on our trip to England I promised everyone in the family that we would visit at least...
a year ago
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a year ago
Before we left on our trip to England I promised everyone in the family that we would visit at least one thing they absolutely wanted to see. We completed that for the younger kid at Tankfest. Two more bucket list destinations happened during our first full day in London. We’re...
Transit Maps
Submission – Official Map: GoBus Ohio, 2024 Submitted by Leo, who says: The state-supported GoBus system in Ohio has a somewhat strange route...
a year ago
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a year ago
Submitted by Leo, who says: The state-supported GoBus system in Ohio has a somewhat strange route scheme (e.g. no direct route from Columbus to Cleveland, or Columbus to Cincinnati via Dayton) but their map, despite being overall fairly poor, makes some interesting stylistic...
Twelve Mile Circle –...
England, Day 8 (Onward to London) Finally we reached the end of our time in Dorset. I enjoyed that quiet corner of England and I felt...
a year ago
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a year ago
Finally we reached the end of our time in Dorset. I enjoyed that quiet corner of England and I felt we covered it pretty thoroughly. Now we needed to drive back to London where a whole new set of adventures awaited. Stonehenge However, we couldn’t go straight back because of...
Adventures In...
How to make a “peeled edge” area of interest effect Sure, everyone loves a good raised area-of-interest effect. But what about a peeled edge area of...
a year ago
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a year ago
Sure, everyone loves a good raised area-of-interest effect. But what about a peeled edge area of interest? It’s a snazzy trick and maybe just the sort of flair that your map needs! And it’s simpler than maybe you’d guess. To give your area of interest a peeled edge effect, you...
Transit Maps
Submission – Official Map: Greater Copenhagen Rail Map, 2024 Submitted by Jakob, who says: The M4 branch extension to Copenhagen South has just opened, and with...
a year ago
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a year ago
Submitted by Jakob, who says: The M4 branch extension to Copenhagen South has just opened, and with it, a much improved map compared to 2019 [My review of the 2019 map can be found here – Cam]. The Circle Line is now more spacious, junctions are labeled more clearly, and metro...
Transit Maps
Historical Map: Diagram of Passenger Stations in the Sydney Metropolitan Area, 1928 There’s a lot to like about this simple little track diagram of Sydney’s rail system from 1928....
a year ago
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a year ago
There’s a lot to like about this simple little track diagram of Sydney’s rail system from 1928. There’s a lot of different angles – both with route lines and station labels – but it still manages to hang together as a coherent whole. A big part of that is the dead straight...
Twelve Mile Circle –...
England, Day 7 (Tankfest) Finally the single event that justified our entire trip to England arrived, the renowned Tankfest....
a year ago
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a year ago
Finally the single event that justified our entire trip to England arrived, the renowned Tankfest. It’s everything the name implies, a festival of military tanks, and it happens only once a year on the grounds of the Tank Museum in Bovington (map). This is what the younger kid...
Transit Maps
Historical Map: Union Pacific Annual Report Map, 1980 Here’s an absolutely cracking diagrammatic map that appeared as a fold-out sheet in Union Pacific...
a year ago
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a year ago
Here’s an absolutely cracking diagrammatic map that appeared as a fold-out sheet in Union Pacific annual reports from about 1978 through 1981, maybe slightly longer. I first saw this as a photograph of a partial part of the map, but it didn’t take me too long to find the whole...
Twelve Mile Circle –...
England, Day 6 (Bournemouth) We didn’t go far but it seemed like a world apart, traveling from an isolated corner of Dorset into...
a year ago
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a year ago
We didn’t go far but it seemed like a world apart, traveling from an isolated corner of Dorset into its most populous area. That led us to Bournemouth (map), a coastal town along the English Channel. There are so many ancient places in the United Kingdom but this is not one of...
Twelve Mile Circle –...
England, Day 5 (Isle of Purbeck) Dorset’s Isle of Purbeck isn’t an island it’s a peninsula. It was probably more isolated and...
a year ago
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a year ago
Dorset’s Isle of Purbeck isn’t an island it’s a peninsula. It was probably more isolated and difficult to reach in previous centuries. So maybe it felt like an island to people back when the English Channel was the primary “road” to the outside world. Even now it’s a...
Twelve Mile Circle –...
England, Day 4 (Bristol) In retrospect we probably should have done this as an overnight trip. As we soon learned, there’s no...
a year ago
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a year ago
In retrospect we probably should have done this as an overnight trip. As we soon learned, there’s no fast, direct way to drive from Dorset’s Isle of Purbeck to Bristol (map). Google says it should take a couple of hours in optimal conditions which sounds doable, if a bit slow....
Twelve Mile Circle –...
England, Day 3 (Dorchester) We began to explore a little further afield, still within Dorset, as we began to settle in to our...
a year ago
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a year ago
We began to explore a little further afield, still within Dorset, as we began to settle in to our home for the week. That took us a little further west and a few miles inland from the English Channel. It included a lot of open countryside and then a sizeable settlement....
Twelve Mile Circle –...
England, Day 2 (Jurassic Coast) We were firmly based in Swanage after the long day of travel and ready to explore our new...
a year ago
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a year ago
We were firmly based in Swanage after the long day of travel and ready to explore our new surroundings. However, we were still pretty tired so we stuck close to home and made it an easy day. Swanage sits near the eastern end of the 96 mile (154 km) Jurassic Coast, a UNESCO World...
somethingaboutmaps
Automated Hachuring in QGIS I seem to have accidentally come up with a method for duplicating a centuries-old terrain...
a year ago
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a year ago
I seem to have accidentally come up with a method for duplicating a centuries-old terrain representation technique. If you’ve looked at old maps, you’ve probably seen hachures: lines that run up and down along the slope of terrain features. There were a wide variety of approaches...
Transit Maps
What I’m Up To and the Future of the Blog Hi, everyone – it’s been a while! Quite a few people have written in lately wondering why I haven’t...
a year ago
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a year ago
Hi, everyone – it’s been a while! Quite a few people have written in lately wondering why I haven’t updated the blog in a while, so I thought I should address that. Firstly, for those that were concerned something was wrong, I’d like to reassure you that I’m a-okay and everything...
Twelve Mile Circle –...
England, Day 1 (Do-Over) This was the trip we wanted to take last summer before our plans abruptly changed. Instead we went...
a year ago
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a year ago
This was the trip we wanted to take last summer before our plans abruptly changed. Instead we went to Costa Rica for reasons I talked about before, and all of us had a wonderful time. Even so, I still felt bad that the younger kid lost out on the original destination. He wanted...
Adventures In...
Find and download vintage USGS topo maps The new Historical Topo Map Explorer is out of beta and ready for you to dive into a collection of...
a year ago
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a year ago
The new Historical Topo Map Explorer is out of beta and ready for you to dive into a collection of over 180,000 beautiful vintage USGS topo maps! Use this updated Living Atlas app to geographically browse, download, export, and even animate, these cartographic objects of joy....
Twelve Mile Circle –...
Cicada Chase, Day 2 The first day of cicada chasing exceeded expectations and we hoped for similar results on the...
a year ago
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a year ago
The first day of cicada chasing exceeded expectations and we hoped for similar results on the second. However the weather began to change overnight with downpours possible during daylight hours. Local meteorologists predicted a line of thunderstorms rolling through the Midwest,...
Twelve Mile Circle –...
Cicada Chase, Day 1 What would be a good present for someone who just graduated from college with a degree in...
a year ago
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a year ago
What would be a good present for someone who just graduated from college with a degree in entomology? Well, how about a quick trip to the Midwest to hunt for bugs? May 2024 marked a special occasion that was well-reported (maybe over-reported) by the mainstream media: the...
Twelve Mile Circle –...
Detour to Ashtabula About two and a half years ago I planned to capture three unvisited counties at the far northeastern...
a year ago
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a year ago
About two and a half years ago I planned to capture three unvisited counties at the far northeastern corner of Ohio. Unfortunately it didn’t happen due to a snowstorm that dumped about a foot of snow on the target area. So instead I changed my plans and focused on Michigan’s...
Adventures In...
Close Encounters of the Cartographic Kind I was watching the Steven Spielberg 1977 classic, Close Encounters of the Third Kind, with the...
a year ago
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a year ago
I was watching the Steven Spielberg 1977 classic, Close Encounters of the Third Kind, with the family last night and nerded out when I saw a character that claimed to be a cartographer. I always do. It was the cartographer who recognized that the signals the aliens sent were...
Twelve Mile Circle –...
Graduated It seemed like just yesterday that Twelve Mile Circle chronicled the kid who designed an imaginary...
a year ago
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a year ago
It seemed like just yesterday that Twelve Mile Circle chronicled the kid who designed an imaginary town and counted various forms of transportation. Now my elementary aged student is all grown up, a newly-minted university graduate. Those interceding years passed much more...
Twelve Mile Circle –...
Kaiserslautern I hope to stay longer than 72 hours the next time I visit Germany. I don’t recommend such a short...
a year ago
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a year ago
I hope to stay longer than 72 hours the next time I visit Germany. I don’t recommend such a short visit. However I went there for work as I do occasionally, and I had no choice. So that’s what I did. I landed in Frankfurt on Monday, drove down to Kaiserslautern, stayed through...
Twelve Mile Circle –...
Dayton, Ohio Part 7  (Hodgepodge) The Dayton trip came to an end but I still had a bunch of stuff to talk about that didn’t fit into...
a year ago
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a year ago
The Dayton trip came to an end but I still had a bunch of stuff to talk about that didn’t fit into any of the earlier articles. Naturally I’ve collected them all together within this final compilation to serve as a wrap-up. Then we can call this one done and move onto the next...
somethingaboutmaps
My Decade with Blender It occurs to me that I have been Blendering for a long time. In fact, it’s been almost exactly a...
a year ago
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a year ago
It occurs to me that I have been Blendering for a long time. In fact, it’s been almost exactly a decade since I gave my first public presentation on the technique of generating shaded relief using Blender. And in that time, the method has been adopted far more widely than I could...
Twelve Mile Circle –...
Dayton, Ohio Part 6 (Breweries) It’s the eternal question. Should I lump all of the brewery visits into a single article or should I...
a year ago
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a year ago
It’s the eternal question. Should I lump all of the brewery visits into a single article or should I spread them within the series? Well, as always, it depends. This time I decided to discuss them all at once because of a simple fact of geography. We visited eight breweries...
Twelve Mile Circle –...
Dayton, Ohio Part 5 (Venturing West) My second day of county counting focused west of Dayton, once again targeting five new counties....
a year ago
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a year ago
My second day of county counting focused west of Dayton, once again targeting five new counties. This time I planned to capture Butler and Darke counties in Ohio; and Union, Fayette, and Randolph counties in Indiana. Hopefully this excursion would also take about three hours like...
Twelve Mile Circle –...
Dayton, Ohio Part 4 (Venturing North) The ultimate destination was Dayton, Ohio and it took about seven and a half hours to get there....
a year ago
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a year ago
The ultimate destination was Dayton, Ohio and it took about seven and a half hours to get there. However we didn’t just sit in Dayton for an entire week. If I had to drive all that way you better believe I would do some County Counting along the way too. At this point I’ve...
Twelve Mile Circle –...
Dayton, Ohio Part 3 (Museums) Sure, I visited the various Wright Brothers museums, historical sites, and memorials but they...
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a year ago
Sure, I visited the various Wright Brothers museums, historical sites, and memorials but they weren’t the totality of Dayton’s remarkable legacy. It wasn’t even the reason why we visited. I mentioned the younger kid’s interest in all things aeronautical earlier and it traced back...
Twelve Mile Circle –...
Dayton, Ohio Part 2 (Take a Walk) Dayton is decently sized place with about 130,000 residents in the city proper and about 800,000 in...
a year ago
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a year ago
Dayton is decently sized place with about 130,000 residents in the city proper and about 800,000 in the larger metropolitan area. So that makes it large enough for some attractions and urban amenities, but nobody would mistake it for a city that never sleeps. I figured I might...
Adventures In...
Illumination Cartography Here are a few flavors of a technique, illumination cartography, that uses data to shed light on its...
a year ago
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a year ago
Here are a few flavors of a technique, illumination cartography, that uses data to shed light on its underlying basemap. There’s something satisfying about presenting a phenomenon as revealing geography rather than obscuring it. Love, John
Twelve Mile Circle –...
Dayton, Ohio Part 1 (The Wright Stuff) When people have asked, I’ve told them with a straight face that we didn’t go to Daytona for Spring...
a year ago
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a year ago
When people have asked, I’ve told them with a straight face that we didn’t go to Daytona for Spring Break, no, we went to Dayton. As in Ohio. As in probably the least likely Spring Break destination in the United States. We managed to avoid warm weather, sandy beaches, and...
Adventures In...
How to Make a Hexagonal Cartogram in ArcGIS Pro Of course maps are just the most fascinating and information dense graphical information products...
a year ago
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a year ago
Of course maps are just the most fascinating and information dense graphical information products around…in my unbiased opinion. I can, and do, go on and on about the deep and pervasive benefits of spatial representations. But…well…sometimes a map, strictly speaking, can have...
somethingaboutmaps
Take the 2024 Freelance Mapper Survey Friends and colleagues, it’s time once again for the survey that Aly Ollivierre and I conduct every...
a year ago
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a year ago
Friends and colleagues, it’s time once again for the survey that Aly Ollivierre and I conduct every two years. We ask people who do freelance mapping work about their fees and other business practices, in order to help bring more transparency to our little niche of the world, and...
Adventures In...
How to Make a Historical Animation with Landsat Here’s how to whip up a three decade animation of deforestation in the Amazon Rainforest,...
a year ago
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a year ago
Here’s how to whip up a three decade animation of deforestation in the Amazon Rainforest, using Landsat Explorer. And it only takes a few minutes. … 0:00 Intro0:20 Assembling the animation1:47 Checking the result2:14 Saving an animation as an MP42:44 More animation examples3:33...
Adventures In...
Thoughts on the Cartographer’s Role in an AI Future A few moments ago I was asked by a student about the “development of cartography over the next 10...
a year ago
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a year ago
A few moments ago I was asked by a student about the “development of cartography over the next 10 years.” Here’s my somewhat off-the-cuff response, though my thoughts have been steeping in this for the past year or so. In the next 10 years artificial intelligence, and probably...
Adventures In...
5 Minutes to Make a Map! We’ve all been there. A request comes in and you don’t have a lot of time. Like 5 or 10 minutes....
a year ago
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a year ago
We’ve all been there. A request comes in and you don’t have a lot of time. Like 5 or 10 minutes. What! Ok, ok, be cool, this is going to be ok. Just breathe…and think. Think. Yes, we’ve got this. We’ve got the tools and the resources to crank out a serviceable map in the amount …
Adventures In...
Tolkien Style Maps in a GIS: part 4, Assembly “There’s some good in this world, Mr. Frodo, and it’s worth fighting for.” In this 4-part series...
a year ago
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a year ago
“There’s some good in this world, Mr. Frodo, and it’s worth fighting for.” In this 4-part series we’ll walk through the reckoning of a Lord of the Rings style fantasy map, right in ArcGIS Pro. We map-makers get to breathe honest to goodness geographic life into the seminal...