Resolve the problem of the International Date Line longitude going from -180 to +180 degrees to create a map of the Pacific Ocean in Didger

Didger uses coordinates that increase in the X and Y directions. There is not a way to center on 180°/-180°.

To work around the problem, you can either:

Method 1: Create two maps. One for the right side, from 0° to 180°, and another for the left side from -180° to 0. Then use the Arrange | Align Objects commands to arrange them so they line up. You should not overlay them, since that will move them back.

Method 2: Add 360 to the X coordinate.

Method 3: Use a file like Pacificp.gsb (attached) to display the base map with positive coordinates from -30 to 360.