Spatial -

NOAA Datums Videos 2014

Differential correction with NA2011 and the newest epoch of NAD83

See our and Datums Basics and GPS Tutorials for the long-awaited results of months of rigorous testing and peer review

Trimble Positions software has replaced Trimble GPS Analyst in ArcGIS 10.1

ALASKA GPS and GIS users - check out Joel Cusick's Datum and Projections presentation Feb 2013

ArcGIS 10.1 - New and Cool improvements see Presentation from Melita Kennedy, ESRI : Projections and Datums Dec 2012

Home GIS Basics


This includes servers, desktop and mobile computers required to store, access and process data. Data capture devices such as scanners, digitizers and GPS are also required.


This includes not only GIS or AutoCAD software but also various drawing, statistical, imaging, database and other software required for the capture, display and analysis of data.


Finding existing datasets in a form ready to use with your data is a challenge faced by any project.  Data can come in many forms: representations of real world features as points, lines or polygons, aerial or satellite imagery, other types of remotely sensed data as well as non-spatial datasets.


Well-defined, consistent methods are required to produce accurate, reproducible results. Metadata (data about the data) is key for documenting these processes.


YOU are the most important component in a GIS since you add the human sense of purpose. People must develop the procedures and define the tasks of GIS.

"Man is still the most extraordinary computer of all."  -John F. Kennedy (1917-1963)
Title Filter 
# Article Title
1 GIS is a SYSTEM of 5 parts
2 Training Project: Introduced
3 Training Project: Proposed Solution
4 Consider the Scale of Your Data
5 Combining Data of Different Datums
6 ESRI ArcGIS: Case Study