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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
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
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
Common point editing tasks
Common line editing tasks
Common polygon editing tasks
Common annotation editing tasks
Common multipoint editing tasks
Editing data in a different projection
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 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
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
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
Geoprocessing
Geoprocessing tool reference
Geodatabases and ArcSDE
Data management with ArcCatalog
Data support in ArcGIS
Extensions
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
The geocoding process
Finding an individual address
Geocoding a table of addresses
Rematching a geocoded feature class
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
Exploring the address locator file
Why change your address locator file?
Changing default settings
Changing default settings in the address locator template file
Table schema and the locator file
Accommodating alternative reference table schema
Modifying the query
Accommodating changes in the geocoding rule base files
Address Locator Properties dialog box
About StreetMap data
About StreetMap data
Linear referencing
Getting started with linear referencing
Creating route feature classes
Displaying and querying routes feature classes
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
ESRI Data and Maps
Working with StreetMap data
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