PROPER ERROR SPAN SPECIFICATION DEVICE AND METHOD FOR ALTITUDE DATA, COMPUTER PROGRAM FOR SPECIFYING PROPER ERROR SPAN, AND RECORDING MEDIUM WITH COMPUTER PROGRAM RECORDED

摘要

PROBLEM TO BE SOLVED: To provide the proper error span specification device and method of altitude data.;SOLUTION: From a map data storage part, a spot on a road link as a specification object of the proper error span of an altitude value is extracted, and on the basis of the mesh altitude data, the altitude value of the object spot is calculated, and as for the altitude value of the object spot, a first error span is calculated on the basis of accuracy relating to the altitude value, and on the basis of road attribute information relating to an inclination set for the road link and the reference altitude data of the other spot on the road link, a second error span of the object spot is calculated, and the overlapped part of the first error span and the second error span is specified as the proper error span of the object spot.;COPYRIGHT: (C)2013,JPO&INPIT