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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

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-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
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 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

About editing dimension features

Creating dimension features

Modifying a dimension feature's geometry and style
Using a digitizer
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
Tables and attribute information
Understanding tables and attribute information

An overview of tables and attribute information

About tabular data sources

Common tables and attributes tasks

Keyboard shortcuts for working with tables
Creating tables and managing attribute information

Creating new tables

About ObjectID fields

Adding and deleting fields

Editing values in a table

Making field calculations

Working with date fields

Reloading the table cache

Exporting records

About joining and relating tables

Joining tables

Relating tables

Joining the attributes of features by location

Creating spatial data from tables

Working with Microsoft Excel files in ArcGIS

Working with Microsoft Access files in ArcGIS
Displaying tables and attribute information

Previewing a table in ArcCatalog

Adding and viewing tables in ArcMap

Setting field properties, aliases, and table display options

Navigating to and finding records in a table

Sorting records in a table

Selecting records in a table

Summarizing data in a table

Printing a table

Adding a table to a layout

Viewing statistics for a table

Creating a graph from a table

Creating a report from a table
Geoprocessing
Geoprocessing tool reference
Geodatabases and ArcSDE
Data management with ArcCatalog
Image and raster data management
Data support in ArcGIS
Extensions
Geocoding and address management
Getting started with geocoding

An overview of geocoding

Definition of the address locator
Understanding geocoding
Preparing for geocoding
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
Linear referencing
Network analysis

Using the Network Analyst extension
Analyzing geometric networks
Mobile GIS
Interoperability and standards support

Overview of interoperability

Overview of OGC and ISO support

ESRI protocols and programming interfaces
GML support in ArcGIS
WFS support in ArcGIS
WCS support in ArcGIS
WMS support in ArcGIS
KML support in ArcGIS
Customizing and developing with ArcGIS
Guide to data that comes with ArcGIS
Licensing and desktop administration
GIS Servers and services

An overview of GIS servers used with ArcGIS
Using ArcIMS with ArcGIS Desktop
Using ArcGIS Server with ArcGIS Desktop

An overview to using ArcGIS Server with ArcGIS Desktop

About the roles of GIS end users, authors, developers, and administrators

Types of services in ArcGIS Server
Authoring and publishing services for ArcGIS Server
Administering ArcGIS Server with ArcCatalog
Creating and publishing web maps for ArcGIS Server