When tackling a public emergent event, we normally need to display the corresponding address of the event on
the electronic map. In order to display a stated data record (address string) on the electronic map, the system needs
to assign geographic coordinates to that record, which is called address coding. The standard address database has
stored standard address codes, including the coding table and total address table.
When the address string is entered, the first thing to do is to split the address string. And for the successfully split
string, the system undertakesmatching in the address code database, and finally matches the coordinates and marks
on the electronic map, thus completes the address positioning.