Troubleshooting

I am unable to create custom linear units, angular units, ellipsoids, datums, and coordinate systems. The fields where I would input the data are either greyed out or don't appear.

This occurs when your geocalc.dat file is read-only. Please click the Options menu in the Geographic Calculator and select Preferences.  Once the Preferences form is open go to the General tab and then check to make sure the check box labeled Read-only in the Coordinate Conversion Parameter Database group box is unchecked.

I get an error ("...floating point overflow...") when I try to use the PACKED DMS format for my coordinates.

Check to see that the Longitude value has three digits allocated for the degrees part of the value.

For example:

Latitude: 45 degrees 23 minutes 30 seconds N

Longitude 74 degrees 30 minutes 15 seconds W

PACKED DMS:

Latitude: 452330

Longitude: 0743015 (note the '0' as a place holder)