A Brief History of Maps

Distilling the entire three-thousand-year history of maps and mapmaking into a 2,400-word article seems awfully hubristic, but Clive Thompson’s piece for the July 2017 issue of Smithsonian Magazine gives it a try, tying everything together right from the outset:

Is it possible that today’s global positioning systems and smartphones are affecting our basic ability to navigate? Will technology alter forever how we get around?

Most certainly—because it already has. Three thousand years ago, our ancestors began a long experiment in figuring out how they fit into the world, by inventing a bold new tool: the map.

[Tony Campbell]

Esri Makes Satellite Imagery Available to OpenStreetMap Editors

Esri is making its satellite imagery collection available to OpenStreetMap editors.

Today Esri is proud to announce that we are making our own global collection of satellite imagery available to the OSM community directly through our existing World Imagery Service. This regularly updated resource provides one meter or better satellite and aerial photography in many parts of the world, 15m TerraColor imagery at small and mid-scales (~1:591M down to ~1:72k), 2.5m SPOT Imagery (~1:288k to ~1:72k), 1 meter or better NAIP in the US and many other curated sources, so we know it will make a welcome addition to OSM’s growing catalog of reference layers.

OSM editors have been able to trace maps from satellite imagery for years; other sources of such imagery have included Bing and Yahoo (back when Yahoo Maps was a thing). Different sources have different strengths, so this can only help the project. (Esri’s imagery makes no difference where I am, but that’s not a surprise.)

NASA Images of Hurricane Harvey

Hurricane Harvey on 26 Aug at 5:45 PM CDT (2245 UTC), as captured by NOAA’s GOES-East satellite. Credits: NASA/NOAA GOES Project.

NASA’s page on Hurricane Harvey has been updated many times, sometimes several times a day, since Harvey began its life as Tropical Depression 9 on 17 August. It includes plenty of satellite imagery of the storm, as well as temperature and rainfall maps.

Blog posts prior to January 2016 are offline for the time being, the result of my changing this site to a new FTP user account on the same server without taking into account some of the hard links in the PHP code of my legacy pages. Sorry about that. I think I have some idea how to get them back up and running; I’ll let you know when I do.

An Almost-Too-Late Roundup of Historical and Unusual Eclipse Maps

I meant to post this before today’s solar eclipse, but I spent a good chunk of the past few days dealing with basic site maintenance; during the eclipse itself I was, well, observing and photographing it. But while the iron may not be as red-hot as it was even eight hours ago, it’s still glowing a bit, so how about I clear out some bookmarks:

Eclipse maps that pinpoint the zone of totality date back to the eighteenth century. Atlas Obscura looks at those early eclipse maps, notably those from Edmond Halley.

In the runup to the eclipse there have been some seriously weird and quirky eclipse maps, many of which correlating the path of the eclipse to utterly unrelated things. The first one I saw was this one: the path of the eclipse versus bigfoot sightings.

There have been others. Many others, to the point of absurdity. Maps on the Web has been collecting these maps over the past few weeks, and All Over the Map’s roundup of eclipse maps features them as well.

Earlier this month, the Washington Post’s Wonkblog noted the eerie correlation between Google searches about the eclipse and the path of the eclipse itself:

Washington Post

Finally, people were watching traffic maps to track the number of people travelling to watch the eclipse. Apparently eclipse-related traffic congestion was a thing. (Here’s Michael Zeiler’s forecast, based on population statistics.)

‘The Messed Up Mountains of Middle-earth’

Science fiction/fantasy novelist Alex Acks, a geologist by training, has some issues with Middle-earth’s mountain ranges. “Middle-earth’s got 99 problems, and mountains are basically 98 of them.” Basically it comes down to how Tolkien’s mountain ranges intersect at right angles—and mountains don’t do that.

And Mordor? Oh, I don’t even want to talk about Mordor.

Tectonic plates don’t tend to collide at neat right angles, let alone in some configuration as to create a nearly perfect box of mountains in the middle of a continent. […]

To be fair to J.R.R. Tolkien, while continental drift was a theory making headway in the world of geology from 1910 onwards, plate tectonics didn’t arrive on the scene until the mid-50s, and then it took a little while to become accepted science. (Though goodness, plate tectonics came down—I have it on good authority from geologists who were alive and in school at the time that it was like the holy light of understanding shining forth. Suddenly, so many things made sense.) Fantasy maps drawn after the 1960s don’t get even that overly generous pass.

And here I thought Tolkien’s mountains were better than most—but then I’m no geologist, and also than most may not be saying that much.

The Medieval Fantasy City Generator

It’s like Uncharted Atlas, but for cities: the Medieval Fantasy City Generator is a web application that “generates a random medieval city layout of a requested size. The generation method is rather arbitrary, the goal is to produce a nice looking map, not an accurate model of a city.” As was the case with Uncharted Atlas, the effect is accidentally damning: if an algorithm can create a fantasy setting indistinguishable from a human-made product, what does that say about the human-made product? [Ada Palmer]

Previously: Uncharted Atlas.

Hedberg Maps Survives Through Niche and Custom Mapmaking

Another tale of a traditional map publisher surviving in the face of Google Maps, GPS and smartphones from the Star Tribune, which profiled Minneapolis mapmaker Tom Hedberg earlier this month. Hedberg Maps’s traditional map products sell a fraction of what they used to, and they have fewer employees than they used to, but the company survives, the article says, by focusing on niche publications, like college and sports maps, and custom mapmaking, though their online store still has plenty of street maps. [MAPS-L]