Franz's blog

Video – Coordinate System Jargon: geoid, datum, projection

The road to choosing custom projections is not paved with sundrops and lilies. It is time to start learning the nuts and bolts of coordinate systems.

Geodesy, the geoid.
Ellipsoid, geographic coordinate system.
Can’t effectively measure with ellipsoid.
Planar coordinate system.
Geodetic datums.
Projections.
REMEMBER this, degrees vs. linear units.
Three types of projections.
Recap.

  Video - Georeferencing in ArcMap 9