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Welcome to ArcGIS Desktop Help
Copyright information
GIS Dictionary
What's new in ArcGIS
What's new in ArcGIS 9.2
Migration guides
Migrating from ArcView GIS 3 to ArcView 9
Migrating from ArcInfo Workstation to ArcGIS Desktop
Getting started
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
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
An overview of ArcCatalog
About workspaces
Getting started with ArcCatalog
Building the Catalog
Managing the Catalog's contents
Exploring an item's geography
Searching for items
Working with metadata
Data support in ArcGIS
An overview of data support in ArcGIS
Data formats supported in ArcGIS
CAD data
Coverages
NetCDF: multidimensional, time series data
Raster data
Shapefiles
Tables and attribute information
Terrains
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