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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
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-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
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

About editing dimension features

Creating dimension features

Modifying a dimension feature's geometry and style
Using a digitizer
Spatial adjustment
Editing topology
Editing relationships and related objects

About editing relationships and related objects

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
Tables and attribute information
Geoprocessing
Geoprocessing tool reference
Geodatabases and ArcSDE
An overview of the geodatabase
Architecture of a geodatabase

Architecture of a geodatabase

Geodatabase storage is based on relational principles

Where does the application logic belong?

The geodatabase is object-relational

Geodatabase storage in relational databases

Geodatabase transaction management

Geodatabase XML
Designing a geodatabase
Building a geodatabase
Creating a geodatabase
Defining the properties of a geodatabase
Adding datasets and other geodatabase elements
Working with geodatabase datasets
Data management workflows, transactions, and versioning
Geodatabase data storage and schema

A short history lesson on simple features

How geodatabases are stored in a DBMS
Feature geometry and raster data storage
Inside a geodatabase in DB2
Inside a geodatabase in Informix
Inside a geodatabase in Oracle
Inside a geodatabase in PostgreSQL
Inside a geodatabase in SQL Server
Administering ArcSDE geodatabases
Administering File and Personal geodatabases
Working with geodatabases using SQL
Data management with ArcCatalog

An overview of ArcCatalog

About workspaces
Getting started with ArcCatalog
Building the Catalog
Managing the Catalog's contents
Exploring an item's geography

Previewing an item's geographic data

Exploring data in Geography view

Creating thumbnails
Searching for items
Working with metadata
Image and raster data management
Understanding raster data
Supported raster data
Properties of raster data

About raster dataset properties

Raster pyramids

Raster dataset statistics

Raster compression

About reduced resolution dataset files

About auxiliary files

About proxy files

Defining a raster's coordinate system

Raster dataset colormaps

Bit depth capacity for raster dataset cells

NoData in raster datasets

World files for raster datasets
Designing a raster database
Building and managing a raster database
Raster display and visualization
Raster analysis and geoprocessing
Serving raster data
Data support in ArcGIS
Extensions
Geocoding and address management
Linear referencing
Getting started with linear referencing
Creating route feature classes
Displaying and querying route 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

An overview of displaying and querying route events

Dynamic segmentation

Adding 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

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

Using the Network Analyst extension
Analyzing geometric networks

What is a geometric network?
Creating and managing geometric networks
Editing geometric networks
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

An overview of WMS support in ArcGIS
KML support in ArcGIS

An overview of KML support in ArcGIS

KML elements

Why share GIS data as KML?

Translating ArcGIS information to KML

Preparing your map documents in ArcGIS for KML publishing

Creating KML files

Serving KML with ArcGIS Server

KML examples

Using folders to organize KML content

Frequently asked questions about KML
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 North America
World
Europe
Mexico
Elevation and image data
Working with StreetMap data
Licensing and desktop administration
GIS Servers and services