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Welcome to ArcGIS Desktop Help
Copyright information
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)?
Projected coordinate systems

About projected coordinate systems

About map projections

Projection types

Planar projections

Conic projections

Cylindrical projections

Other projections

Projection parameters
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

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

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
Using a digitizer

About digitizing

An overview of preparing to digitize

Registering the paper map

Digitizing features on a paper map
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
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

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
Automating your work with scripts

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

Managing intermediate data

Accessing ArcSDE data in tools

Sharing Python modules
Sharing tools on an ArcGIS Server
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
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

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
Raster data
Understanding raster data
Properties of raster data
Designing a raster database
Building and managing a raster database
Raster display and visualization
Raster analysis and geoprocessing
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
Getting started with geocoding
Understanding geocoding
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

Alternative searches

The Alternate Name table tab

The Alias Table dialog box

Building an address locator for alternative searches

Searching for an intersection

Building a composite address locator
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
Linear referencing
Getting started with linear referencing

An overview of linear referencing

Common tasks in linear referencing

Some linear referencing scenarios

Linear referencing datasets in ArcGIS

Designing a linear referencing system in your geodatabase
Creating route feature classes

An overview of creating route feature classes

Creating route feature classes

Defining the measure properties of your m coordinates

Using existing linear features to create routes

Creating routes from existing lines

About calibrating route measures using points

Calibrating routes with points

Migrating route features to a geodatabase

Accessing the Create Routes wizard

Accessing the Calibrate Routes wizard
Displaying and querying routes 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

An overview of creating and editing event data

Creating event tables in ArcCatalog

About locating features along routes

Locating features along routes

Editing event tables in ArcMap
Working with route event data
Network analysis
Mobile GIS
Interoperability and standards support
Customizing and developing with ArcGIS
Guide to data that comes with ArcGIS
ESRI Data and Maps
Getting started with ESRI Data and Maps
United States (census)
United States (hydrography)
United States (landmarks)
United States (transportation)
United States (other)
StreetMap USA
World
Europe
Canada
Mexico
Elevation and image data
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
About the ArcGIS Image Server
Configuration and licensing
Designing an image service

About the image service and the definition file

About the image service properties

About the service table

Pixel size ranges used

Supported raster data file types

About the ArcGIS Image Server process chain

About the raster process definition

About combining service definitions
Creating an image service
Working with image service group layers
Working with raster data in a service
Working with the image service
Image service processes
Publishing and administering the ArcGIS Image Server
ArcGIS Image Server Seamline extension
ArcGIS Image Server Ortho extension

About the ArcGIS Image Server Ortho extension

The orthorectification parameters

Using an elevation image service as the DEM input
ArcGIS Image Server workflows
ArcGIS Image Server Clients
GIS Servers and services