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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

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
An overview of mapping and visualization
Using ArcMap
Working with layers
Navigating and interacting with maps
Navigating maps and layout pages
Interacting with maps
Adding graphics and text to maps
Working with graphics
Working with text
Symbolizing data
Animation
Using cartographic representations
Page layout and map composition
Getting started with laying out and printing maps
Map elements
Grids and graticules
Rulers and guides
Working with data frames in layout view
Creating interactive and paperless maps
Map output
Working with graphs and reports
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

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

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

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

An overview of geoprocessing history

History logging and the History toolbox

Managing history

Geoprocessing history in metadata
Advanced modeling through simulations
Geoprocessing tool reference

An overview of commonly used tools

Geoprocessing commands quick reference guide

Licensing for geoprocessing tools

Data types for geoprocessing tool parameters
3D Analyst toolbox

An overview of the 3D Analyst toolbox

Understanding 3D data

Concepts of surface analysis

Working with TIN surfaces

Working with raster surfaces

3D visualization
3D Analyst Conversion toolset
Functional Surface toolset
Raster Interpolation toolset
Raster Math toolset
Raster Reclass toolset
Raster Surface toolset
Terrain toolset
TIN Creation toolset
TIN Surface toolset
Analysis toolbox
Business Analyst toolbox
Cartography toolbox

An overview of the Cartography toolbox

Cartography toolbox sample applications
Graphic Quality toolset
Masking toolset
Representation Management toolset
Symbolization Refinement toolset
Conversion toolbox
Coverage toolbox

An overview of the Coverage toolbox
Analysis toolset
Conversion toolset
Data Management toolset
Data Interoperability toolbox
Data Management toolbox
Geocoding toolbox
Geostatistical Analyst toolbox

An overview of the Geostatistical Analyst toolbox

Understanding geostatistical analysis

Working with a geostatistical layer

Creating a grid from a geostatistical layer

Geostatistical Analyst toolbox sample applications
Tools
Linear Referencing toolbox
Multidimensional toolbox

An overview of the Multidimension toolbox
Tools
Military Analyst toolbox

An overview of the Military Analyst toolbox
Data Management toolset
Geometry toolset
Utilities toolset
Military Overlay Editor toolbox
Network Analyst toolbox
Server toolbox
Spatial Analyst toolbox
Spatial Statistics toolbox
Samples toolbox

An overview of the Samples toolbox
Conversion
Data Management
Tracking Analyst toolbox
Environment Settings
Geodatabases and ArcSDE
Data management with ArcCatalog
Data support in ArcGIS
Extensions
Geocoding and address management
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

An overview of working with route event data

About overlaying event data

Overlaying events

About aggregating event data

Aggregating route events

About transforming event measures

Transforming event measures

Accessing the Route Events Geoprocessing wizard
Network analysis
Mobile GIS
Interoperability and standards support

Overview of interoperability

Overview of OGC and ISO support

ESRI protocols and programming interfaces
GML support in ArcGIS

An overview of GML support in ArcGIS

How to work with GML in ArcGIS

Using the GML simple features profile

Using supported GML profiles

Adding new GML profiles
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
Licensing and desktop administration
ArcGIS Image Server
GIS Servers and services