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Welcome to ArcGIS Desktop Help
Copyright information
GIS Dictionary
What's new in ArcGIS
Getting started
Fundamentals of GIS data
Introducing ArcGIS Desktop
Tutorials
Tutorials
Getting Started Quickstart tutorial index
3D Analyst tutorial index
Animation in ArcMap tutorial index
ArcGIS Publisher tutorial index
ArcReader tutorial index
ArcScan tutorial index
Building a Geodatabase tutorial index
Data interoperability tutorial index
Database servers tutorial index
Editing geodatabases tutorial index
Editing GIS features tutorial index
Geocoding tutorial index
Geoprocessing tutorial index
Linear Referencing tutorial index
Maplex tutorial index
Representations tutorial index
Spatial Analyst tutorial index
StreetMap tutorial index
Tracking Analyst tutorial index
Toolbars
Getting more help
Using this help system
Getting help within the applications
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
About projected coordinate systems
About map projections
Projection types
Planar projections
Conic projections
Cylindrical projections
Other projections
Projection parameters
Geographic transformations
Geographic transformation methods
Equation-based methods
Grid-based methods
Supported map projections
Vertical coordinate systems
About vertical coordinate systems
Vertical datums
Geoid
Mapping and visualization
Editing and data compilation
Geoprocessing
Geoprocessing tool reference
Geodatabases and ArcSDE
Data management with ArcCatalog
Data support in ArcGIS
Extensions
Geocoding and address management
Linear referencing
Network analysis
Using the Network Analyst extension
Analyzing geometric networks
What is a geometric network?
Creating and managing geometric networks
Editing geometric networks
Analyzing geometric networks
Mobile GIS
Interoperability and standards support
Overview of interoperability
Overview of OGC and ISO support
ESRI protocols and programming interfaces
GML support in ArcGIS
Customizing and developing with ArcGIS
Guide to data that comes with ArcGIS
Licensing and desktop administration
Administering the ArcGIS License Manager
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
ArcGIS Image Server
GIS Servers and services