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.

Minute Markers:
-0:27- Geodesy, the geoid.
-1:10- Ellipsoid, geographic coordinate system.
-2:09- Can't effectively measure with ellipsoid.
-3:21- Planar coordinate system.
-3:49- Geodetic datums.
-5:41- Projections.
-6:47- REMEMBER this, degrees vs. linear units.
-7:10- Three types of projections.
-7:32- Recap.

All images included are in the public domain, though the geoid image was originally created here I believe (correct me if I'm wrong):
http://www.esa.int/spaceinimages/Images/2004/10/The_Earth_s_gravity_field_geoid_as_it_will_be_seen_by_GOCE

Видео Coordinate System Jargon: geoid, datum, projection канала Rhumb Line Maps