Use INSROP Projection

When the source data is stored in geographic coordinates (latitude and longitude), ArcView may display the data in a range of projections. For most INSROP purposes we recommend the Lambert Equal-Area Azimuthal projection. Hence we have chosen this projection, with 120 degrees East as Central Meridian and 71 degrees North as Reference Latitude, as the default INSROP projection. The default distance units are set to kilometers.

When you are projecting a view, make sure all data themes in the view are stored in geographic coordinates. As reminder, when choosing the Use INSROP Projection menu item, the user is asked whether this is true.