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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
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

Geographic transformation methods

Equation-based methods

Grid-based methods
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

An overview of editing and data compilation
Getting started with editing

About editing your geodatabase in ArcMap

Adding the data you want to edit

The structure of vector datasets

Adding the editing toolbars

Starting and stopping an edit session

The sketch construction tools

Using the snapping environment

About setting distance units

Setting direction measuring systems and units

Shortcut keys for editing in ArcMap
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

An overview of spatial adjustment

Adding the Spatial Adjustment toolbar

Setting up the spatial adjustment

Working with links

Working with link files and control point files

Previewing and performing the adjustment

Transferring attributes between features
Editing topology
Editing relationships and related objects

About editing relationships and related objects

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

An overview of using tools
Using the tool dialog
Managing toolboxes
Managing tools and toolsets
Batch processing
Using tools in the command line
Tool layers
Automating your work with models

An overview of models

Creating a simple model
Model concepts and terms
Using ModelBuilder
Controlling the flow of processing
Model Iteration
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
Advanced modeling through simulations
Geoprocessing tool reference
Geodatabases and ArcSDE
Data management with ArcCatalog
Data support in ArcGIS

An overview of data support in ArcGIS

Data formats supported in ArcGIS
CAD data
The composition of a CAD drawing
Working with CAD data in ArcGIS
Displaying CAD features
Georeferencing CAD data
CAD feature attributes and queries
CAD data translations
Geoprocessing tools for CAD translation
Common CAD data workflows
Coverages
NetCDF: multidimensional, time series data
Raster data
Shapefiles

About shapefiles, dBASE tables, and file types

Shapefile file extensions

Creating new shapefiles and dBASE tables

Adding and deleting fields in shapefiles

Creating and updating indexes in shapefiles

Defining a shapefile's coordinate system

How to salvage a corrupt shapefile
Tables and attribute information
Terrains
Extensions
Geocoding and address management
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

Overview of interoperability

Overview of OGC and ISO support

ESRI protocols and programming interfaces
GML support in ArcGIS
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

About extending ArcGIS
Guide to data that comes with ArcGIS
ESRI Data and Maps
Working with StreetMap data
Licensing and desktop administration
ArcGIS Image Server
GIS Servers and services