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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
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
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

About vertical coordinate systems

Vertical datums

Geoid
Mapping and visualization
Editing and data compilation
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
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
Keeping track of geoprocessing history
Advanced modeling through simulations
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
Preparing for geocoding
Building an address locator
Locating addresses
Additional geocoding techniques
Keeping an address locator current
Distributing your address locator
Adjusting your address locator file
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
Creating and editing event data
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
Licensing and desktop administration
ArcGIS Image Server
GIS Servers and services