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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
Fundamentals of GIS data

How maps convey geographic information

Georeferencing and coordinate systems

Elements of geographic information

How GIS represents and organizes geographic information

How ArcGIS users work with geographic information

Users work with many data types and data formats in ArcGIS
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
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
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

An overview of editing and data compilation
Getting started with editing
Common editing tasks
Creating new features

About creating new features

Creating point features and vertices

Creating lines and polygons

Creating segments using angles and lengths

Creating segments using angles from existing segments

Creating segments that are circular arc curves

Creating segments by tracing features

Creating buffers

Mirroring features

Combining features from different layers

Intersecting features

Merging and separating features

Copying parallel line features

Creating a fillet curve between two lines

Creating cul-de-sac lines

Creating lines with the Traverse window

Creating lines with the 2-Point Line window

Creating lines with the Offset Line window
Editing existing features
Editing attributes

Editing attributes

Copying and pasting attributes

Deleting attributes

Editing with default values and attribute domains

About updating data using SQL
Editing annotation
Editing dimension features
Using a digitizer
Spatial adjustment
Editing topology
Editing relationships and related objects
COGO
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
Business Analyst toolbox
Cartography toolbox
Conversion toolbox
Coverage toolbox
Data Interoperability toolbox
Data Management toolbox
Geocoding toolbox
Geostatistical Analyst toolbox
Linear Referencing toolbox
Multidimensional toolbox
Military Analyst toolbox
Military Overlay Editor toolbox

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

An overview of the Samples toolbox
Conversion
Data Management
Tracking Analyst toolbox
Environment Settings
Geodatabases and ArcSDE
An overview of the Geodatabase
Architecture of a geodatabase
Designing a geodatabase
Building a geodatabase
Data management workflows, transactions, and versioning
Geodatabase data storage and schema
Administering ArcSDE geodatabases

An overview of ArcSDE geodatabase administration

What is ArcSDE?
Installing and upgrading ArcSDE
Configuring an ArcSDE geodatabase
Creating and administering user accounts
Connecting to an ArcSDE geodatabase
Maintaining a geodatabase
Tuning an ArcSDE geodatabase
Scaling and moving your geodatabase
Administering File and Personal geodatabases
Working with geodatabases using SQL
Data management with ArcCatalog
Data support in ArcGIS
Extensions
Geocoding and address management
Getting started with geocoding
Understanding geocoding
Preparing for geocoding

Understanding address locator styles

Commonly used address locator styles

Preparing reference and address data

Standardizing your reference data
Building an address locator
Locating addresses
Additional geocoding techniques
Keeping an address locator current
Distributing your address locator
Adjusting your address locator file
About StreetMap data
Linear referencing
Network analysis
Mobile GIS
Interoperability and standards support
Customizing and developing with ArcGIS
Guide to data that comes with ArcGIS
ESRI Data and Maps
Working with StreetMap data
Getting started with StreetMap
Geocoding addresses with StreetMap USA data
Finding a route using StreetMap USA data
Licensing and desktop administration
ArcGIS Image Server
GIS Servers and services