Quick Facts about GEOG 861
- Instructor: Dr. Fritz C. Kessler
- Course Structure: Online, 10-12 hours a week for 10 weeks
- Prerequisites: GEOG 484: GIS Database Development or permission of the instructor
Overview
Map projections are mathematical formulae by which geographical coordinates, representing positions on Earth (i.e., latitude and longitude), are transformed to plane coordinates that locate positions on two-dimensional planes. Map projection formulae are implemented as algorithms in geographic information systems (GIS), image processing, and other kinds of mapping and analysis software. Although many types of map projections are available, only certain types are well suited to any given mapping or analysis task. Geometric and geopotential datums provide models that define control for positions and heights, respectively. There are hundreds of geodetic datums that have been published and many of these are still in use throughout the world. Furthermore, since GIS often involves merging multiple datasets, each of which is likely to be the product of a different projection and geodetic datum, GIS professionals need to be knowledgeable about these advanced topics.
GEOG 861 is an elective for Penn State's Master of GIS.
Learn more about GEOG 861 - The Earth is Round and Maps are Flat: Spatial Reference Systems in GIS (1 min, 18 sec)
Want to join us? Students who register for this Penn State course gain access to assignments and instructor feedback and earn academic credit. For more information, visit Penn State's Online Geospatial Education Program website. Official course descriptions and curricular details can be reviewed in the University Bulletin.