Maps in iOS 6

With Apple’s iDevice lineup, vertical integration has been a constant theme. In iOS 6, this trend continues, even if the motivations are a bit more contrived than a desire to further bring more of the iOS experience under Apple’s control. The drive this time is a souring relationship between Apple and Google which has been in the making for some time now. To a broader extent, the Maps.app experience on iOS has been aging for a while with no clear party to blame. iOS 5 lacked turn by turn navigation, 3D buildings, higher resolution map tiles or vector roads, and other modernizations that have been part of the Android mapping experience for quite a while. That is, until now.

With iOS 6 Apple moves to a solution completely detached of Google, and for the most part brings functionality back up to parity with the competition. The features I touched on already are the main highlights of the new Maps.app experience, as iOS 6 now includes: turn by turn navigation with voice guidance, fully textured 3D buildings, and vector roads. Most of the things users have come to expect from Maps.app remain as well, including three separate views: standard, satellite, and hybrid. Those almost don’t need explanation: standard is the typical solid colored region mapping paradigm we’ve grown accustomed to with vector roads, and points plus regions of interest, satellite includes purely aerial or satellite imagery, and hybrid overlays vector maps and points of interest on the satellite view. Nevertheless there are some things missing from the new Maps.app which we will touch on later.

   
Left to Right: Standard, Hybrid, Satellite

The amount of complexity in moving to a different mapping data source is not something to underestimate. Over the years, Google has built out an extraordinary mapping product with the conjunction of their own street view fleet (which collects both location data, driving conditions data, and a full two pi steradian sphere of imagery), and an even larger set of data contributed by individual handsets reporting back driving conditions which is aggregated into traffic data. Google also made some acquisitions of its own back in the day to catalyze its own Google Maps experience, and at present it is the 9000 pound gorilla for maps.

Most users don’t realize this, but this traffic data is often statistically derived and crowdsourced using data from handsets in areas where in-road inductive sensors aren’t installed. The mobile space has already seen one major battle over who gets WiFi location trilateration data (Skyhook, Apple, or Google) and this traffic data often comes back with WiFi location data as well if the interface is turned on. For traffic data, Apple has begun building out its own dataset with the same approach – by crowdsourcing the velocity vector from iOS 6 devices that are in motion. If you plug your handset into a car charger and have the setting ticked under System Services, you’ll notice “Traffic” showing a purple location services icon while rolling around town. It’s obvious to me that Apple is aggressively collecting data to build its traffic database and get close to parity with Google.

  
Maps.app settings (Left) showing data from TomTom and link, (Right) Traffic data aggregation in progress while driving around (purple location services icon)

For iOS 6 maps, Apple moves to a variety of data sources beyond what’s in their in-house collection, and for the most part they’re disclosed on the acknowledgements page under settings on iOS 6. There are obviously a few different components to the whole maps product: the road data itself, aerial, satellite, and building textures; business and point of interest listings; and finally reviews. If you look at that acknowledgements page, you can back out a mapping between data sources and the components they contribute. The names have already been pretty well discussed: TomTom, Acxiom, AND, CoreLogic, DigitalGlobe, DMTI, Intermap, Urban Mapping, Waze, Yelp, Flickr, NASA, OpenStreetMap, US Census, US Geological Survey, and the US National Mapping Agency. There are 24 different sources whose data is aggregated together into iOS 6 maps, at least in my region with my acknowledgements page. Apple has also acquired Placebase, Poly9, and C3 Technologies for adding to its own in-house maps team.

The other component is the 3D polygons and textures for terrain and buildings. Terrain elevation data comes from regional government data such as USGS, but for cities and higher resolution terrain data there’s one more key player. That player is C3 Technologies, a company Apple acquired which was an offshoot of SAAB AB. The polygons and textures are generated computationally by taking many aerial photos from small aircraft with a small swath size. For Apple, there are undoubtably some buildings which have seen hand massaging of geometry and textures, it’s in the vast majority of otherwise normal buildings that we can use to gauge quality.

This is an interesting contrast to Google’s 3D dataset, which started out supporting 3D buildings with contributed 3D Sketchup models that were manually built and submitted to Google Earth. After that, Google began also computationally deriving buildings using the isotropic aerial view, and further hand massaging trouble buildings.

If that all sounds complicated, it’s because it is. GIS (Geographic Information Systems) are a science in and of themselves, and the complexity and investment involved with Apple completely managing their own product is nothing to be underestimated. The fact that Apple is willing to not only move to, but also maintain their own GIS should emphasize to what lengths Apple is willing to go to distance themselves from reliance on Google.

What iOS 6.0 maps does away with are the few things that Apple and its data partners can’t yet replicate: street view, and routing on public transportation. For street view, you’re basically out of luck, and users will have to use a standalone Google Maps application in the future which hopefully includes this functionality. I’m told that Apple views 3D building support as the replacement for street view's absence. For routing, Apple is going to rely on 3rd party application support to provide public transportation routing data. Searching for directions and selecting the bus or public transport icon will bring you to a routing apps screen, which will be divided into installed routing applications and suggestions from the App Store based on your region. These will then hand a token back to the Maps app relevant data.

  
Routing showing toll road notification (Left), current location popup (Right)

So enough about all this theory and what the framework is like, how does the new iOS 6 Maps application actually work? Well, evaluating that whole experience requires us to break down the features into a few different areas. 

The overall maps interface changes dramatically from iOS 5. The new iOS 6 maps interface includes a very different appearance or base layer, and again vector roads and street labels. In iOS 5, maps were previously served as texture tiles and scaled appropriately for different zoom levels. While the Google Maps for Android interface includes a combination of vector maps at some zoom levels and texture tiles at others, iOS 6 moves to an entirely vector approach for roads and graphics in the Standard map layout at every zoom level. In hybrid mode, there are vector roads drawn atop texture tiles, and in Satellite mode you get only the aerial tiles. Apple also changed around the unloaded region texture to a black grid with white lines which also scale.

 

Overall the appearance of Maps in iOS 6 is clean and unique enough to not be a direct ripoff of Google Maps. The jump to vector roads and labels comes with almost no performance hit on the iPhone 4S, where it remains smooth as butter when zooming and panning around. I played with Maps in the standard and hybrid modes on a 3GS and 4 as well, and didn’t see any unacceptable slowdowns. Performance has drastically improved since the first betas.

The quality of aerial textures at this point is perhaps my only major complaint with this new version, as the LoD can be quite low at some zoom levels, and varies wildly by region. Internationally I saw texture resolution jump around between completely unacceptable and quite good. It's obvious that Apple has prioritized home soil since in the USA things are better. Obviously the regions that have 3D building data offer very high resolution textures as a result of custom aerial capture.


This is as far as you can zoom into Seoul, South Korea in Hybrid or Satellite mode, due to low resolution aerial texture assets at present.

There’s no option to include or exclude point of interest labels, instead they appear at appropriate zoom levels automatically in the standard view. About the only option besides changing map modes under the in-app settings fold is inclusion of traffic notes on roads, and an option to print.


New iOS 6 map assets working in Tweetbot for iPhone

From a developer perspective, I'm told and have read that that the switch to Apple-supplied maps is transparent. All the same APIs are implemented with the new maps as in the past, including pins, overlays, the three already mentioned views (standard, satellite, and hybrid), traffic, and points of interest. The apps that I’ve played with which use the maps API work flawlessly so far on iOS 6.

 

 
Introduction and Overview Maps: 3D Flyover
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  • melgross - Wednesday, September 19, 2012 - link

    That's not actually true. The only thing you're limited to buying from Apple is apps. Everything else can be bought elsewhere and read, or played. That's true for books, music, video of any kind, including Tv shows and movies, PDF's, etc. Reply
  • reuthermonkey1 - Thursday, September 20, 2012 - link

    Assuming that Apple continues to allow those 3rd party apps to exist in their App Store... Reply
  • GSRennie - Wednesday, September 19, 2012 - link

    I would rather buy Apps from the Apple Store and have some confidence that the products have been reviewed for functionality and are virus-free. I gave up on Windows years ago after adding up the time I was spending on malware control using the mix of products that you seemed to need to do a complete job. Add to that the item and money spent to get rid of viruses on various family computers (the kids weren't as cautious as I was). No doubt the Windows world is much more secure these days but I'm not going back. I run the occasional Windows program on Parallels on a laptop (with virus protection). Other than Apps for iPhones, iPads, iPods (all Apple devices), I don't see what outside content I'm blocked from getting by Apple. I can buy any software I can run on OSX and run any Windows software using Boot Camp and a Windows installation or Windows emulation options. As to the agency pricing model Apple and its partner publishers were pushing for textbooks, lets wait for a court ruling on whether that amounts to collusive price fixing. Apple wasn't setting the prices, and the publishers (with some considerable support from authors) were making the case they needed more revenue than derived from Amazon discounted sales to survive. I'm not trying to take sides on that issue until I hear more on the merits of both positions. Reply
  • Sufo - Thursday, September 20, 2012 - link

    lol, instead of teaching your kids how to not bork a computer you simply ran away from the problem. If you can afford a mac, you could have afforded to buy them their own shitty laptop, which they could infect to the point of failure and then learn how to deal with the mess themselves... or not. Seems the typical mac user is a lazy parent as well as user! Reply
  • robinthakur - Thursday, September 20, 2012 - link

    I think we are coming to the point where a computer should not be easily bork-able because it is essentially just an appliance which is reliable and easy to operate. This means things like OS drives and system files should be hidden to end users, but this would drive us technical types round the bend.

    The solution to most infections is simply to reinstall and restore/repoint data, and buying them a shitty laptop which may get infected constantly will simply waste time that they could otherqwise spend doing something more useful. Unless you teach your kids how to reinstall Windows also, that's a lot of wasted hours.

    Also quite a bit of how you don't get infected is not necessarily teachable, which I realised recently trying to explain it to someone les technical. I was downloading a link from Zdnet and on the page there were loads of ads and download managers that looked like the download button but when you clicked them they tried to install some stupid software. The actual download link was fairly hidden. This and the dangers of pop ups/cookies/add-ins is not an easy subject to teach, its something we have learnewd and now take for granted.

    If my Windows 7 or 8 pc (self-built I might add) kept getting infected with malware in a way which was difficult to defend against using the standard approaches, I would 100% look at moving to another infrastructure. Not everybody has the knowledge or time to deal with the problem as we would. It does not denote laziness, simply different priorities than you own. If a curated app store does get around the danger of malware from unsafe install locations, it's not surprising that its incredibly popular with regular users and is now being adapted by most of the companies out there. Even Android only trusts known safe download locations by default.
    Reply
  • steven75 - Tuesday, September 25, 2012 - link

    Ah the classic "blame the user" mindset instead of the fact that Microsoft Windows is a perilous platform to use when it comes to security. Reply
  • MykeM - Thursday, September 20, 2012 - link

    The choice to shop where goods are sold cheaply is all good but it's not without downfall. But as someone pointed out your fury is bit misguided. With the exception of Apps, I can load onto my iPhone movies, books and songs that I got elsewhere. iTunes doesn't differentiate from items bought from its store or downloaded off Google Play- as long the format is compatible.

    The irony to finding cheaper price elsewhere is that media whether it's from Google Play, Amazon or iTunes, are priced equally. So there's hardly any truth in that argument.
    Reply
  • crankerchick - Thursday, September 20, 2012 - link

    Your last statement hasn't quite been my experience, at least on the content I purchase. I do don't do a lot of video purchases, but the few I have purchased have generally been cheaper on Amazon. I also routinely find music to be cheaper on Amazon, along with more specials to be had.

    Also, Apple may allow you to install media purchased from other sources, but it sure doesn't make such options a desired thing to do. Unsupported media formats require third party apps (for a price) along with the archaic way of transferring that content one-by-one, app by by, using iTunes, instead of allowing a true sync, as with supported content.

    It is infinitely easier on Android to put the content you want on your device and consume it as you desire.

    Again, not nitpicking, as your statements are accurate, but just point out that while Apple may "allow" something, they certainly don't make those "allowed" things something appealing to do.
    Reply
  • Petri - Tuesday, September 25, 2012 - link

    I have a mac and an iphone and regularly buy content from Amazon - you're right, it is generally cheaper than itunes. It's also very easy to do, since Amazon supply a downloader for the mac which neatly places all your downloaded content directly in iTunes for you.

    Of course once the content's in itunes, it syncs with the iphone as easily as anything else does.
    Reply
  • Stas - Sunday, September 23, 2012 - link

    What a can of worms that is. People are surprisingly easily manipulated. The pen is built around them, and they don't notice or care. Thus the the term - iSheep. But it's our nature, I suppose; not inherent to just iFans. Look at our country and "our" government... Reply

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