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Welcome to ArcGIS Desktop Help
Copyright information
GIS Dictionary
What's new in ArcGIS
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
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
Mapping and visualization
Editing and data compilation
Geoprocessing

What is geoprocessing?

A whirlwind tour of geoprocessing

Geoprocessing tools

Geoprocessing framework

Frequently Asked Questions about geoprocessing
Fundamental tool concepts
Using geoprocessing tools
Automating your work with models
Automating your work with scripts
Geoprocessing environments

An overview of geoprocessing environments

Environment levels and hierarchy

Script environments

Specifying application environment settings

Specifying tool environment settings

Specifying model environment settings

Specifying model process environment settings
Environment categories
Documenting tools and toolboxes

An overview of documenting tools and toolboxes

An overview of the Documentation Editor

Entering topics in the Documentation Editor

Using the page editor

Documenting models

Documenting scripts

Viewing documentation for tools

Changing tool dialog appearance

Referencing a compiled help file

Exporting tool documentation to an HTML file
Sharing tools and toolboxes

An overview of sharing tools and toolboxes

Methods for distributing tools

Pathnames explained: absolute, relative, UNC, and URL

A structure for sharing tools

Managing intermediate data

Accessing ArcSDE data in tools

Sharing Python modules
Sharing tools on an ArcGIS Server
Keeping track of geoprocessing history

An overview of geoprocessing history

History logging and the History toolbox

Managing history

Geoprocessing history in metadata
Advanced modeling through simulations
Geoprocessing tool reference
Geodatabases and ArcSDE
An overview of the Geodatabase
Architecture of a geodatabase
Designing a geodatabase

An overview of geodatabase design

Geodatabase design steps

Using ArcGIS Data Model designs

Documenting your geodatabase design

Modeling feature classes

A note about the use of UML for geodatabase design

Design Tips
Building a geodatabase
Data management workflows, transactions, and versioning
Geodatabase data storage and schema

How geodatabases are stored in a DBMS
Feature geometry and raster data storage
Inside a geodatabase in Oracle
Inside a geodatabase in SQL Server
Inside a geodatabase in DB2
Inside a geodatabase in Informix
Administering ArcSDE geodatabases
Administering File and Personal geodatabases

An overview of administering file and personal geodatabases

File geodatabases: compressing vs. compacting

Compacting file and personal geodatabases

About compressing file geodatabase data

Upgrading personal geodatabases

File geodatabases and the file system
Working with geodatabases using SQL

An overview of working with a geodatabase using SQL

Spatial relationships

Spatial operations

SQL implementation differences
Using spatial types with SQL
SQL functions reference
Data management with ArcCatalog
Data support in ArcGIS
Extensions
3D Analyst
ArcGIS Data Interoperability extension
ArcGIS Publisher
ArcScan
Business Analyst
Geostatistical Analyst
Maplex
Military Analyst
Getting started with Military Analyst
What's new in Military Analyst 9.2
Data Management
Coordinate tool
Terrain Analysis tools
Geodesy tools
The conversion tools
MA catalog wireframe symbology
Military Analyst in ArcGlobe
Military Analyst tools reference
Military Overlay Editor
Network Analyst
PLTS
Schematics
Working with ArcGIS Schematics
Schematics Designer
Spatial Analyst
Survey Analyst
Tracking Analyst
Geocoding and address management
Getting started with geocoding
Understanding geocoding

What is an address?

The geocoding work flow

The geocoding framework

The process of geocoding

Customization of the address locator

Common geocoding tasks
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

About StreetMap data
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
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