1. Trace the latitude and longitude data obtained by a group of GPS modules on Baidu map. 2. When drawing directly on the map, the standard GPS latitude and longitude coordinates will be offset. This is the encryption set by the Bureau of Surveying and Mapping and the cartographer. To convert them into Baidu map coordinates, the code is as follows **@return Baidu map coordinates */publicgeopointgpstobaidu (stringdata) {/dat.