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.
Use INSROP Projection