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Welcome to ArcGIS Desktop Help
Copyright information
Acknowledgements
GIS Dictionary
What's new in ArcGIS
Getting started
Fundamentals of GIS
Introducing ArcGIS Desktop

What is ArcGIS 9.3

An overview of ArcGIS Desktop

Using ArcGIS Desktop

Mapping and visualization in ArcMap

The geodatabase

Workspace and dataset management with ArcCatalog

Data compilation and editing

Geoprocessing and analysis

Tips and tricks within ArcGIS
Tutorials
Toolbars
Getting more help

Using this Help system

Getting help within the applications

ArcGIS Desktop Resource Center

ArcGIS Desktop Documentation Library

Accessing ESRI Software Training

Using the GIS Dictionary

Contacting Technical Support

Support for users located outside the United States

Contacting ESRI
Map projections and coordinate systems
Getting started with map projections

An overview of map projections

Projection basics the GIS professional needs to know

About the geoid, ellipsoid, spheroid and datum, and how they are related

Identifying an unknown coordinate system

Converting Degrees Minutes Seconds values to Decimal Degree values
Geographic coordinate systems
Projected coordinate systems
Geographic transformations
Supported map projections
Vertical coordinate systems
Mapping and visualization
Editing and data compilation
Tables and attribute information
Geoprocessing
Geoprocessing tool reference
Geodatabases and ArcSDE
Data management with ArcCatalog
Image and raster data management
Data support in ArcGIS
Extensions
Geocoding and address management
Linear referencing
Network analysis
Mobile GIS
Interoperability and standards support
Customizing and developing with ArcGIS
Guide to data that comes with ArcGIS
Licensing and desktop administration
GIS Servers and services