FIPSZone and Spheriod:

[LarryS23]

Does anyone know how to specify the spheriod and the fipszone?

Regards,

[Pointdump]

Hi Larry,
More details please on what you want to do. The Datum is based on the Spheroid, so if you choose another Spheroid it changes the Datum.
Dave

[LarryS23]

Ah. I am asking if I can change the spheriod coordinates or Federal Information Processing Standard state code for a civil 3d drawing. I have my datum at 1983 (NAD83), but how do I ensure that the spheriod is grs1980, or is that already set?

[Pointdump]

Larry,
The NAD83 Datum does indeed use the GRS1980 Ellipsoid(Spheroid).
Use Command MAPCSLIBRARY to get particulars (Click "View") on any Coordinate System or Datum.
Dave

[LarryS23]

Thanks so much. Yeah, I was not too familiar with spheroid coordinates.