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Welcome to ArcGIS Desktop Help
Copyright information
Acknowledgements
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)?

GCS_Assumed_Geographic_1
Projected coordinate systems
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-Krüger

Geocentric Coordinate System

Geographic Coordinate System

Gnomonic

Goodes Homolosine

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 Carrée

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

An overview of editing and data compilation
Getting started with editing

About editing your geodatabase in ArcMap

Adding the data you want to edit

Editing ArcSDE geodatabases

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

Editing features that have z-values

Shortcut keys for editing in ArcMap

Frequently asked questions about 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 annotation

An overview of editing annotation

Creating new annotation features

Creating and editing annotation that follows features

Editing the size and position of annotation features

Editing annotation in the Attributes dialog box

Editing the appearance of annotation features

Editing feature-linked 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

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

An overview of COGO

Common COGO workflows

About COGO descriptions

Adding COGO fields to a feature class

Traverse file format

Offset points file format

Applying a ground to grid correction

Reporting COGO descriptions

Using the Curve Calculator command

Using the COGO Area command

Splitting features into COGO lines
Tables and attribute information
Geoprocessing

What is geoprocessing?

A whirlwind tour of geoprocessing

Geoprocessing tools

Geoprocessing framework

Frequently Asked Questions about geoprocessing
Fundamental tool concepts

An introduction to the fundamental tools

Overlay analysis

Proximity analysis

Table analysis and management

Surface creation and analysis

Statistical analysis

Extracting data
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

Opening ModelBuilder

Creating a simple model

Saving a model
Model concepts and terms
Using ModelBuilder
Controlling the flow of processing
Model Iteration
Automating your work with scripts

An overview of writing geoprocessing scripts
Getting started with writing geoprocessing scripts
Accessing tools within a geoprocessing script
Creating script tools
Batch processing with geoprocessing scripts
Data properties and access when scripting
Working with AMLs
Scripting object: Properties and Methods
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
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

Sharing and connecting to UNC pathnames

Accessing ArcSDE data in tools

Techniques for sharing Python scripts

Managing intermediate data in shared models

Sharing stylesheets

Checklist for sharing tools and toolboxes
Geoprocessing with ArcGIS Server

An overview of geoprocessing with ArcGIS Server

Key concepts for geoprocessing services

Guide to related geoprocessing with server topics

Input and output data types

Creating models for geoprocessing services

Preparing map documents containing tool layers

Defining output symbology for geoprocessing tasks

Defining symbology for input feature sets

Publishing geoprocessing services

Managing the jobs directory

Deploying services on multiple computers - LocalJobsDirectory

Data access considerations for geoprocessing tasks

Creating tasks for the UNIX/Linux environment

Creating script tools for geoprocessing tasks

Using geoprocessing tasks in Python scripts

Spatial reference considerations for geoprocessing services

Performance tips for geoprocessing services

Checklist for authoring and publishing geoprocessing services

Python scripts to zip and unzip data
Geoprocessing service examples
Keeping track of geoprocessing history
Advanced modeling through simulations
Geoprocessing tool reference
Geodatabases and ArcSDE
Data management with ArcCatalog
Image and raster data management
Understanding raster data

What is raster data?

Raster bands

Cell size of raster data

Representing features in a raster dataset

Discrete and continuous data

Raster dataset zones and regions

Raster dataset attribute tables

Raster data organization

Gathering basic raster dataset information
Supported raster data
Properties of raster data

About raster dataset properties

Raster pyramids

Raster dataset statistics

Raster compression

About reduced resolution dataset files

About auxiliary files

About proxy files

Defining a raster's coordinate system

Raster dataset colormaps

Bit depth capacity for raster dataset cells

NoData in raster datasets

World files for raster datasets
Designing a raster database
Building and managing a raster database

How raster data is stored in a geodatabase

Exploring geodatabase raster catalogs

Creating raster datasets in a geodatabase

Creating raster catalogs in a geodatabase

Importing raster datasets

Exporting or converting raster datasets

Exporting raster catalogs

Mosaicking raster datasets

Persisting a transformation to a raster dataset without rectifying it

Migrating your 8.x raster catalog

Updating your geodatabase raster catalog footprints

Loading large raster datasets into ArcSDE

Transferring large raster datasets

Building large raster datasets-case studies

Raster data and disconnected editing
Raster display and visualization

Displaying rasters

Adding a raster dataset to a map

Adding a raster catalog to a map

Saving a raster dataset or catalog layer file

About setting default raster display options

Choosing which raster formats can be viewed

Setting the default bands to display multiband rasters

Displaying the raster's spatial resolution

Georeferencing a raster dataset

Georeferencing video sample

Orthorectifying a raster dataset

About projecting raster datasets on the fly

Improving the display of raster data

Color correcting using raster data

Working with the histogram when displaying raster data

Changing the appearance of background values

Symbolizing values of NoData in raster datasets

Interactively viewing pixel values using the Pixel Inspector

Interactively reveal rasters using the Swipe Layer tool

Panchromatic sharpening

Performance tuning for displaying raster data
Raster analysis and geoprocessing

About analyzing raster data

Making selections using the geodatabase raster catalog

Raster conversion

Core geoprocessing tools for raster data

About environment settings for raster data

Specifying raster storage environment settings

Specifying raster analysis environment settings

Specifying the snap raster environment setting
Serving raster data
Serving raster data
Data support in ArcGIS

An overview of data support in ArcGIS

Data formats supported in ArcGIS
CAD data
Coverages

What is a coverage

Summary of coverage feature classes

Coverage resolution (precision)

How coverages are stored

Creating a new coverage

Understanding and maintaining attributes in a coverage

About fields (items) in coverage attribute tables

Creating a new INFO table

About the coverage extent

Coverage tics

Defining a coverage's coordinate system

Coverage topology

Coverage tolerances

Coverage relationships and relationship classes

Coverage data limitations

Importing an ArcInfo interchange file (E00)
NetCDF: multidimensional, time series 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
Terrains

An overview of terrain datasets

FAQs for terrain datasets

Terrain dataset troubleshooting

Known limitations of terrain datasets
Understanding terrain datasets
Properties of terrain datasets
Building terrain datasets
Managing terrain datasets
Terrain analysis
Terrain visualization
Extensions

About ArcGIS Desktop extensions

Evaluating ArcGIS Desktop extensions
3D Analyst
Data Interoperability

About the Data Interoperability help system

An overview of Data Interoperability

Key concepts of the Data Interoperability extension

Using the Data Interoperability tools
Common tasks using Data Interoperability
Using the Data Interopability tools
ArcGIS for AutoCAD

What is ArcGIS for AutoCAD?

Who should use ArcGIS for AutoCAD

Installation

What is ArcGIS Online?
Map service layers
Feature class layers
Coordinate systems
Customization
Tutorial
Troubleshooting
ArcGIS Publisher
Getting started with Publisher
Creating data packages
Creating custom applications
ArcReader
ArcScan
Getting started with ArcScan
Interactive vectorization
Automatic vectorization
Cell selection
Raster cleanup
Vectorization options and settings
ArcSketch
Business Analyst
Geostatistical Analyst
JTX
Overview of JTX
Using JTX
Configuring JTX
Administering JTX
Maplex
Getting started with Maplex
Label Positions for Points
Label Positions for Lines
Label Positions for Polygons
Label fitting strategies
Resolving label conflicts
Common labeling tasks
Military Analyst
Military Overlay Editor

About MOLE

What's new in this release

Installation and setup

Accessing the Installing and Getting Started with Defense Solutions guide

MOLE documentation and additional ways to get help
Using MOLE with 2D maps
Using MOLE with 3D maps
The MOLE geodatabase schema
Using MOLE in terrain analysis
Tracking, real-time, and MOLE
Using MOLE with ArcSDE
Using MOLE with ArcIMS
Other ESRI applications compatible with MOLE
Advanced topics
Frequently asked questions
Network Analyst
PLTS
Schematics
Working with ArcGIS Schematics
Schematics Designer
Spatial Analyst
Getting started with Spatial Analyst
Solving spatial problems
Performing analysis in Spatial Analyst
The Raster Calculator
Analysis concepts
Spatial Analyst functional reference
Survey Analyst

An overview of Survey Analyst
Cadastral Editor
Survey Editor
Tracking Analyst
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

Deciding to share an address locator

Collecting address locators

Making your address locator public

Accessing distributed address locators

Sharing pre-9.2 address locators
Adjusting your address locator file
About StreetMap data

About StreetMap data
Linear referencing
Getting started with linear referencing
Creating route feature classes
Displaying and querying route feature classes

An overview of displaying and querying route feature classes

Working with route feature classes in ArcMap

Setting the route identifier field

Querying route feature classes

Displaying route measure anomalies

About hatching route feature classes

Hatching options

Displaying hatches

Manipulating the text on hatches

Working with hatch styles
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
Working with route event data
Network analysis

Using the Network Analyst extension
Analyzing geometric networks
Mobile GIS
Interoperability and standards support
Customizing and developing with ArcGIS
Guide to data that comes with ArcGIS
Licensing and desktop administration
GIS Servers and services