| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic map file of small load in handling, and being easily discriminated when it is displayed. SOLUTION: The electronic map file can be displayed on a display device by using a display software performing the display processing of the predetermined image data and text data, and has the data structure where the same signs are attached to the same coordinate positions of a plurality of map sheets, with respect to the plurality of map sheets respectively having the different additional information on the same basic map sheet correlated with a predetermined coordinate system, and the plurality of map sheets are arranged to be displayed in predetermined order to be configurated as a single file. COPYRIGHT: (C)2003,JPO |
