Collapse all

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
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