Geographic Information Systems:



The Spatial Data Transfer Standard (SDTS)

National Spatial Data Infrastructure

On-line GIS trips:

On-line ArcView Tutorials:

Data Modeling:



Remote Sensing and GPS:


NASA Earth-Sun System Website:


Corvallis Microtechnology, Inc. (1996). Introduction to the Global Positioning System for GIS and TRAVERSE.  URL:


Trimble, Inc. (2006).  GPS Tutorial.  URL:





The Association of American Geographer, Cartography Specialty Group  (

International Cartographic Association (

Government Publications & Maps Division, San Diego State University Library (


Projection and Coordinate systems:

NCGIA Core Curriculum in Geographic Information Science. Unit 013 - Coordinate Systems Overview:   by Peter H. Dana, Department of Geography, University of Texas at Austin, USA.



Spatial Reasoning:


(under construction)