Extracting Chinese geographic data from Baidu Map API

摘要

In this article, we describe the two new commands cngcode and cnaddress, which can be used to link Chinese addresses to locations defined by their longitudes and latitudes through Baidu Map API v3.0 (), an online map and navigation system widely used in China. cngcode transfers Chinese addresses to locations, whereas cnaddress does the opposite. These two commands make it easier with Stata to deal with addresses and locations in China.