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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
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 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)?
Projected coordinate systems
Geographic transformations
Supported map projections
Vertical coordinate systems
Mapping and visualization
Editing and data compilation
An overview of editing and data compilation
Getting started with editing
Common editing tasks
Creating new features
Editing existing features
Editing attributes
Editing annotation
Editing dimension features
Using a digitizer
Spatial adjustment
Editing topology
Editing relationships and related objects
COGO
Geoprocessing
Geoprocessing tool reference
Geodatabases and ArcSDE
Data management with ArcCatalog
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
ArcGIS Image Server
GIS Servers and services