This is something I’ve been meaning to write for a while. I should have written it last December, during the hullaballoo over Apple’s maps, but I’ve never been one to strike when the iron is hot.
You’ll recall that there were a lot of complaints about Apple’s maps app when it launched with iOS 6, replacing the previous app that was powered by Google Maps. The map data didn’t match the user experience: it was a first-rate app that used second-rate data. Apple oversold the experience and failed to meet the high expectations of its customers. It was a problem that no other online map provider had ever had to deal with before, not least because no one had launched a new map service with the same amount of hubris, nor the same amount of scrutiny from day one.
But many of the complaints about Apple’s maps verged into hyperbole. The notion that Apple’s maps were uniquely bad compared to other online maps was frankly unfair. Because when you get right down to it, all online maps suck. They all fail in some way, somewhere, and some more than others—and if the maps you use seem fine to you, it’s because they suck somewhere else.
NASA has released a free-airgravity map of the Moon: “If the Moon were a perfectly smooth sphere of uniform density, the gravity map would be a single, featureless color, indicating that the force of gravity at a given elevation was the same everywhere. But like other rocky bodies in the solar system, including Earth, the Moon has both a bumpy surface and a lumpy interior. … The free-air gravity map shows deviations from the mean, the gravity that a cueball Moon would have.” Gravity data comes from the GRAIL mission, with the digital elevation model provided by the Lunar Reconnaissance Orbiter laser altimeter. Image credit: NASA’s Goddard Goddard Space Flight Center Scientific Visualization Studio.
Terry Pratchett once declared the Discworld unmappable (“There are no maps. You can’t map a sense of humour.”); all the same, there is now an interactive map of principal city Ankh-Morpork for the iPad. Tor.com reports that “the map is dotted with itty-bitty little people walking around Ankh-Morpork, doing their Ankh-Morpork business. Walking around, being themselves. … While many of these figures are indistinct civilians, the city is full of characters from the Discworld novels. Of course Death is there … ” Costs $14; requires iOS 6.