DIGITAL MAP EXPANSION/SHRINKAGE DISPLAY METHOD AND DEVICE THEREFOR, AND STORAGE MEDIUM WHERE DIGITAL MAP EXPANSION/SHRINKAGE DISPLAY PROGRAM HAS BEEN STORED

摘要

PROBLEM TO BE SOLVED: To make it easily display a display portion at an optional enlargement ratio by functioning a scroll section as a scale set section for expanding/ shrinking a digital map in a display screen. SOLUTION: An arrow-shaped pointer 5 indicates a scale bar tab 144. When a user moves this mouse 6 in the direction of E1, for example, on a desk DK, the scale bar tab 144 is moved in the shrinking direction DR1 (upper direction of a display screen 4). When the user moves the mouse 6 in the direction of E2, the scale bar tab 144 is moved in the expanding direction DR2 (lower direction of the display screen 4). When the scale bar tab 144 is moved in the shrinking direction DR1, the display portion 150 of a digital map displayed on the display screen 4 can be continuously (analogously) expanded in response to the shift quantity.