Position File Format (.pos)
A position file contains the position values for the four corners of an image. A position file must have the same name as the associated image file but with a .pos extension.
A position file contains position values in the following order: South Latitude, West Longitude, North Latitude, and East Longitude. An example of a position file follows:
46.1638 -122.2471 46.2411 -122.1403
In this example, South Latitude is 46.1638, West Longitude is -122.2471, North Latitude is 46.2411, and East Longitude is -122.1403.
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