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Showing results for tags 'maps'.
Found 4 results
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GPS offset in data for China I think the guy here misses the mark for a very obvious reason - Google and some others get their map data from Chinese sources with the offset already built in and doesn't bother with the correction - but there are still some interesting observations and things to be aware of. The Bizarre Relationship Between China and Google Maps The offset shows clearly here between Hong Kong and Shenzhen. San Sham Road in Hong Kong connects directly to XinShen Rd. in Shenzhen, but, due to the offset applied to the Chinese side, well, it's off by a couple hundred yards or so. This same offset shows up in Google maps anywhere in China, and can show up as discrepancies between satellite data and map data. The best maps to use are ones which use their own data, or have the correction accounted for - Autonavi or Amaps is a good source at http://ditu.amap.com/. They are the most up-to-date - I believe they are the ones who supply the map data to Google - and even have their own phone app similar to Google maps (but which will show your correct location). The difference between Autonavi andGoogle is that Google data is older, and doesn't use the correction
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For online or cell phone maps, AutoNavi or AMap at http://ditu.amap.com/ seems to be the source for Chinese maps, including roads that are still under construction, roads that are temporarily barricaded, and even trails within some parks. It seems more up-to-date even than Baidu. Updates aren't propagated to Google for about a year afterward. I mention that because now they're going into the ride-hailing business. We've used Didi-Chuxing here in Yulin - NEVER had to wait more than THREE minutes. It comes in handy when you find yourself away from the bus lines (or not wanting to WAIT half an hour), or just want to save on parking fees. Going to Yuntian Gong, the parking fee would have been ¥10, Didi was ¥6. The city bus would have left us on the wrong side of the road. From Sixth Tone
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Recommended Maps or travel guides
AT Thru posted a topic in Communications, Planes, Shipping & Money
I was wondering if someone could recommend the best ( in English) road maps/travel guide and where to buy? I am traveling From Chongqing to Jiuzhaigou and to Chengdu by car with my wife in about 2 weeks, we are doing a 2 week road trip any suggestion would be great! -
http://blog.chinatravel.net/china-travel-tips-advice/best-iphone-apps-for-travelers-in-china.html Plecto Optical View is really impressive: http://www.bing.com/videos/search?q=pleco+optical&view=detail&mid=0BF7B4A20A127975A6000BF7B4A20A127975A600&first=0&FORM=NVPFVR
