R calls the Baidu map API

Due to Ggmap not working properly

Consider using R to invoke Baidu maps API

Methods for invoking map interfaces in R
In R, you could have used the package for Google Maps directly Rgooglemaps;ggmap reference: Http://cran.r-project.org/web/packages/RgoogleMaps/RgoogleMaps.pdf Http://www.r-bloggers.com/google-maps-and-ggmap/http://journal.r-project.org/archive/2013-1/kahle-wickham.pdf http://www.milanor.net/blog/?p=534 http://blog.csdn.net/trueman007/article/details/39401547/HTTP www.r-bloggers.com/visualisation-with-r-and-google-maps/



(1) Baidu map---Static Diagram API interface Description http://developer.baidu.com/map/index.php?title=static/static-1 static map calls do not need Ak--key, The required parameters are mainly latitude and longitude, plus some realistic parameters.

(2) Baidu Map---Geocoding api:web service API http://developer.baidu.com/map/index.php?title=webapi/guide/ Webservice-geocoding need to ak--key their own registration application Ak-key:dzai6ftmf9gbjakibwlcomrs Use example: http://api.map.baidu.com/geocoder/v2/? address= Baidu Building &output=json&ak=dzai6ftmf9gbjakibwlcomrs&callback=showlocation
Results displayed: Showlocation&&showlocation ({"Status": 0, "result": {"location": {"LNG": 116.30783584945, "lat") : 40.056876296398}, "precise": 1, "confidence": +, "level": "\u5546\u52a1\u5927\u53a6"}})

(3) R call Baidu Map of the process of the current business needs: a) According to the specific geographical location to obtain latitude and longitude information B) to obtain the required static map according to latitude and longitude C) to process the static map as an object that can be processed in R, such as Ggmap D) use R to process the object as needed