| | 2015 | | 2011 | | | 60 | | | | | | | | | | ⒈ | | www.tianditu.com | 在线地图 | 图层 | | | tianditu 天地图 | | | mapworld | | | | | | ⒉ | | | | ① | 2008 | | | | | | | | | | | | | | | | | | | | | | | | | | | ② | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ⒊ | | | | | | | | 2009 2010 | | | | | | | | 天地图 | | Google | Google 2004 10 | | | Google map Google earth baidu sogou | dingding zhongsou sina mapbar | | | | | | 2008 2011 | | Google | | | | | | | | | | | ⒋ | | | | | | | | | | | | | | ⒌ | | 1 1000000 | 500 1 250000 | 15 2.5 | 300 0.6 | | | | | | 21 | | | | | | POI 兴趣点 | | | | POI 4 | POI | POI | | | | | | | | | | | | | | | ⒍ | | | ① | | | | | | POI | | | | | ② | | | | | | ③ | | | ④POI | | | | | | | | ⑤ | | | | | | | | | POI | | | | | | 维基百科 | | | | | ⒈ | ⒉ | ⒊ | ⒋ | | | | 90 | | | | | | | | | | |