Map drawing apparatus, map drawing method and map drawing program

摘要

In the map drawing apparatus (100), the map database (101) stores data representing the first map element as internal data. The first acquisition unit (103) acquires the internal data from the map database (101). The second obtaining unit (104) receives data representing the second map element as external data via a network such as the Internet. The determining unit (105) determines whether or not the first map element represented by the internal data and the second map element represented by the external data received by the second obtaining unit (104) are the same map element to decide. The drawing unit (106), when it is determined by the determination unit (105) that the first map element and the second map element are the same map element, either one of the first map element and the second map element Only draw on the map.