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Welcome to ArcGIS Desktop Help
Copyright information
Acknowledgements
GIS Dictionary
What's new in ArcGIS

What's new in ArcGIS 9.3

What's new in ArcGIS 9.3.1
Migration guides
Getting started
Fundamentals of GIS
Introducing ArcGIS Desktop
Tutorials
Toolbars

Core ArcMap toolbars

ArcCatalog toolbars

Extension toolbars

ArcScene toolbars

ArcGlobe toolbars

ArcReader 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

About geographic coordinate systems

Spheroids and spheres

Datums

North American datums

What happens to features at +/-180 (dateline)?

GCS_Assumed_Geographic_1
Projected coordinate systems
Geographic transformations
Supported map projections
Vertical coordinate systems

About vertical coordinate systems

Vertical datums

Geoid
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
Understanding raster data
Supported raster data
Properties of raster data
Designing a raster database
Building and managing a raster database
Raster display and visualization
Raster analysis and geoprocessing
Serving raster data
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

Administering the ArcGIS License Manager

Setting up license managers for ArcGIS 93 concurrent use products

Checking license availability

Viewing and changing the license manager

Common license manager problems and how to solve them

Setting the software product

Registering ArcView or ArcEditor and extensions

Evaluating an ArcGIS Desktop extension

Error reporting for ArcGIS software crash data

Frequently asked questions about error reporting
GIS Servers and services