Geographic coordinate in large scale map application and measurement method and map for implementing same method
A technology of large-scale maps and geographic coordinates, applied in the directions of maps/plans/charts, educational equipment, instruments, etc., can solve the problems of cumbersome process, low efficiency, error-prone, etc., to reduce workload, save time, and reduce errors. Effect
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[0036] As shown in the figure, the geographic coordinates of the target point P are to be interpreted. Now, taking the two methods of applying geographic coordinates to obtain the geographic coordinates of point P as an example, the interpretation process and its differences are described in detail.
[0037] The first method: using the original method and map before the present invention, the actual process of measuring the latitude of point P is as follows: the first step, on the indexing belt between the map outlines, through the southwest corner of the map outline, the northwest corner of the map The difference between the latitude and longitude values marked by the corners, combined with the number of graduation dashes between the west map contours, first determine which group of numbers are latitude digits, and mark the number of points corresponding to the graduation band dashes between the degree values. In operation, because the distance between the dashed line and t...
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