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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
Getting started
Fundamentals of GIS data
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

About geographic coordinate systems

Spheroids and spheres

Datums

North American datums

What happens to features at +/-180 (dateline)?
Projected coordinate systems
Geographic transformations

Geographic transformation methods

Equation-based methods

Grid-based methods
Supported map projections
Vertical coordinate systems
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

Moving features

Rotating features

Copying and pasting features

Deleting features

Adding and deleting vertices

Moving vertices

Editing attribute values of a vertex

Reshaping lines and polygons using a sketch

Splitting polygon features

Splitting line features

Trimming lines

Extending lines

Flipping lines

Scaling features

Clipping features

Stretching a feature's geometry proportionately

Simplifying and smoothing features
Editing attributes
Editing annotation
Editing dimension features

About editing dimension features

Creating dimension features

Modifying a dimension feature's geometry and style
Using a digitizer

About digitizing

An overview of preparing to digitize

Registering the paper map

Digitizing features on a paper map
Spatial adjustment
Editing topology

About topology

Topology rules

Topology error fixes

Basic topology tasks

Creating a map topology

Editing features in a topology

Editing shared geometry

Topology validation

Topology errors and exceptions

Correcting topology errors

Finding features with shared topology elements

Clearing selected topology elements

Changing the symbology for topology features

Making new features with topology tools
Editing relationships and related objects
COGO
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
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
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

An overview of advance modeling through simulations

General concepts of modeling through simulations
Developing the different modeling approaches
Geoprocessing tool reference
Geodatabases and ArcSDE
Data management with ArcCatalog

An overview of ArcCatalog

About workspaces
Getting started with ArcCatalog

Starting ArcCatalog

Browsing through the Catalog

What's in the Catalog

Repositioning the Catalog tree

Stopping ArcCatalog
Building the Catalog

About folders and file types

Managing folder connections

Creating and accessing geodatabases

Creating spatial database connections

Adding OLE DB connections

About database server connections

About GIS servers and services

Connecting to GIS servers

Working with database connections

Hiding folders and items

Altering the data formats read by ArcCatalog

Working with file types

Accessing delimited text file data
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
Understanding tables and attribute information
Creating tables and managing attribute information
Displaying tables and attribute information
Terrains
Extensions
Geocoding and address management
Linear referencing
Getting started with linear referencing
Creating route feature classes
Displaying and querying routes feature classes
Displaying and querying route events
Editing routes
Creating and editing event data
Working with route event data
Network analysis
Mobile GIS
Interoperability and standards support
Customizing and developing with ArcGIS

An overview of customizing ArcGIS
Customizing the user interface
Writing macros using VBA

Getting started with VBA

Creating, editing, and running macros

Creating custom commands with VBA and UI Controls

Adding custom commands and toolbars from .dlls

Updating the ArcID module

Locking documents and templates

Changing VBA security

Sample VBA code
Extending ArcGIS desktop applications
Guide to data that comes with ArcGIS
Licensing and desktop administration

Administering the ArcGIS License Manager

Checking license availability

Viewing and changing the license manager

Common license manager problems and how to solve them

Setting the software product

Registering ArcView or ArcEditor and extensions

Evaluating an ArcGIS Desktop extension
ArcGIS Image Server
GIS Servers and services

An overview of GIS services

Servers and the services they provide

User, author, administrator, and developer roles

Types of ArcIMS services

Types of services in ArcGIS Server

WMS service

Using GIS Services in ArcGIS Desktop applications

Thinking about maps in web-enabled GIS applications

Understanding map caches in ArcGIS

Managing server connections in the GIS Servers folder
Authoring and publishing services

An overview of authoring and publishing services

Data access considerations for ArcGIS Server

Publishing resources
Administering ArcGIS Server with ArcCatalog

Overview of ArcGIS Server administration in ArcCatalog

Connecting to a GIS server

Running ArcCatalog under a different operating system account

Adding a server object container

Adding a new service

Adding multiple services at once

Removing a service

Starting, stopping, and pausing services

Displaying server statistics

Creating a server directory

Specifying the log file location

Using a proxy server to connect to the Internet

Setting the capacity of a server object container

Creating a map cache

Publishing a resource to ArcGIS Server

Creating a globe cache

Adding and removing folders