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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
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

About projected coordinate systems

About map projections

Projection types

Planar projections

Conic projections

Cylindrical projections

Other projections

Projection parameters
Geographic transformations
Supported map projections

List of supported map projections

Aitoff

Alaska Grid

Alaska Series E

Albers Equal Area Conic

Azimuthal Equidistant

Behrmann Equal Area Cylindrical

Bipolar Oblique Conformal Conic

Bonne

Cassini-Soldner

Chamberlin Trimetric

Craster Parabolic

Cube

Cylindrical Equal Area

Double Stereographic

Eckert I

Eckert II

Eckert III

Eckert IV

Eckert V

Eckert VI

Equidistant Conic

Equidistant Cylindrical

Equirectangular

Fuller

Gall's Stereographic

Gauss-Kruger

Geocentric Coordinate System

Geographic Coordinate System

Gnomonic

Great Britain National Grid

Hammer-Aitoff

Hotine Oblique Mercator

Krovak

Lambert Azimuthal Equal Area

Lambert Conformal Conic

Local Cartesian Projection

Loximuthal

McBryde-Thomas Flat-Polar Quartic

Mercator

Miller Cylindrical

Mollweide

New Zealand National Grid

Orthographic

Perspective

Plate Carree

Polar Stereographic

Polyconic

Quartic Authalic

Rectified Skewed Orthomorphic

Robinson

Simple Conic

Sinusoidal

Space Oblique Mercator

State Plane Coordinate System

Stereographic

Times projection

Transverse Mercator

Two-Point Equidistant

Universal Polar Stereographic

Universal Transverse Mercator

Van der Grinten I

Vertical Near-Side Perspective

Winkel I

Winkel II

Winkel Tripel
Vertical coordinate systems

About vertical coordinate systems

Vertical datums

Geoid
Mapping and visualization
Editing and data compilation
Geoprocessing
Geoprocessing tool reference

An overview of commonly used tools

Geoprocessing commands quick reference guide

Licensing for geoprocessing tools

Data types for geoprocessing tool parameters
3D Analyst toolbox
Analysis toolbox

An overview of the Analysis toolbox

Comparison poster of Overlay and Extract tools

Analysis toolbox sample applications
Extract toolset
Overlay toolset
Proximity toolset
Statistics toolset
Business Analyst toolbox

An overview of the Business Analyst toolbox
Analysis toolset
Customer Setup toolset
Modeling toolset
Reports toolset
Segmentation Analysis toolset
Segmentation Profiles toolset
Store Setup toolset
Thematic Maps toolset
Trade Areas toolset
Cartography toolbox
Conversion toolbox

An overview of the Conversion toolbox
From Raster toolset
Metadata toolset
To CAD toolset
To Coverage toolset
To dBASE toolset
To Geodatabase toolset
To Raster toolset
To Shapefile toolset
Coverage toolbox
Data Interoperability toolbox

An overview of the Data Interoperability toolbox
Tools
Data Management toolbox

An overview of the Data Management toolbox
Data Comparison toolset
Database toolset
Disconnected Editing toolset
Distributed Geodatabase toolset
Domains toolset
Feature Class toolset
Features toolset
Fields toolset
File Geodatabase toolset
General toolset
Generalization toolset
Indexes toolset
Joins toolset
Layers and Table Views toolset
Projections and Transformations toolset
Raster toolset
Relationship Classes toolset
Subtypes toolset
Table toolset
Topology toolset
Versions toolset
Workspace toolset
Geocoding toolbox
Geostatistical Analyst toolbox
Linear Referencing toolbox
Multidimensional toolbox

An overview of the Multidimension toolbox
Tools
Military Analyst toolbox

An overview of the Military Analyst toolbox
Data Management toolset
Geometry toolset
Utilities toolset
Military Overlay Editor toolbox

An overview of the Military Overlay Editor toolbox
Utilities toolset
Network Analyst toolbox

An overview of the Network Analyst toolbox
Analysis toolset
Network Dataset toolset
Turn Feature Class toolset
Server toolbox

An overview of the Server toolbox
Caching toolset
Spatial Analyst toolbox

An overview of the Spatial Analyst toolbox

Solving problems in Spatial Analyst

Understanding raster data

Performing analysis in Spatial Analyst

Spatial Analyst toolbox sample applications
Conditional toolset
Density toolset
Distance toolset
Extraction toolset
Generalization toolset
Groundwater toolset
Hydrology toolset
Interpolation toolset
Local toolset
Map Algebra toolset
Math toolset
Multivariate toolset
Neighborhood toolset
Overlay toolset
Raster Creation toolset
Reclass toolset
Solar Radiation toolset
Surface toolset
Zonal toolset
Spatial Statistics toolbox

An overview of the Spatial Statistics toolbox

Modeling spatial relationships

Spatial Statistics toolbox sample applications
Analyzing Patterns toolset
Mapping Clusters toolset
Measuring Geographic Distributions toolset
Utilities toolset
Samples toolbox
Tracking Analyst toolbox
Environment Settings
Geodatabases and ArcSDE
Data management with ArcCatalog
Data support in ArcGIS
Extensions
Geocoding and address management
Getting started with geocoding

An overview of geocoding

Definition of the address locator
Understanding geocoding
Preparing for geocoding
Building an address locator
Locating addresses
Additional geocoding techniques
Keeping an address locator current

Updating your reference data

Versioned data and the address locator

Rebuilding address locators
Distributing your address locator
Adjusting your address locator file
About StreetMap data
Linear referencing
Getting started with linear referencing
Creating route feature classes
Displaying and querying routes feature classes
Displaying and querying route events
Editing routes

An overview of editing routes

Creating route features from existing lines

Using ArcMap to calibrate routes with points

About setting route measures

Remeasuring routes

Adding the Route Editing toolbar
Creating and editing event data

An overview of creating and editing event data

Creating event tables in ArcCatalog

About locating features along routes

Locating features along routes

Editing event tables in ArcMap
Working with route event data
Network analysis
Mobile GIS
GPS
Tablet PC
ArcPad integration

An overview of ArcPad

Adding the ArcPad toolbar

About managing data in ArcPad

Getting data for ArcPad

Checking in edits from ArcPad

Undoing a checkout for editing
Interoperability and standards support
Customizing and developing with ArcGIS
Guide to data that comes with ArcGIS
ESRI Data and Maps
Getting started with ESRI Data and Maps
United States (census)
United States (hydrography)
United States (landmarks)
United States (transportation)
United States (other)
StreetMap USA
World
Europe
Canada
Mexico
Elevation and image data
Working with StreetMap data
Licensing and desktop administration
ArcGIS Image Server
GIS Servers and services