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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

About editing your geodatabase in ArcMap

Adding the data you want to edit

Editing ArcSDE geodatabases

The structure of vector datasets

Adding the editing toolbars

Starting and stopping an edit session

The sketch construction tools

Using the snapping environment

About setting distance units

Setting direction measuring systems and units

Editing features that have z-values

Shortcut keys for editing in ArcMap

Frequently asked questions about editing
Common editing tasks
Creating new features
Editing existing 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

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
Tables and attribute information
Geoprocessing
Geoprocessing tool reference
Geodatabases and ArcSDE
Data management with ArcCatalog

An overview of ArcCatalog

About workspaces
Getting started with ArcCatalog

Starting ArcCatalog

Browsing through the Catalog

What's in the Catalog

Repositioning the Catalog tree

Stopping ArcCatalog
Building the Catalog

About folders and file types

Managing folder connections

Creating and accessing geodatabases

Creating spatial database connections

Adding OLE DB connections

About database server connections

About GIS servers and services

Connecting to GIS servers

Working with database connections

Hiding folders and items

Altering the data formats read by ArcCatalog

Working with file types

Accessing delimited text file data
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

About search results

Finding items using the Search tool

Searching with geographic criteria

Searching with temporal criteria

Searching with keywords

Working with search results
Working with metadata

About metadata

Metadata standards and the ArcGIS metadata format

ArcGIS support for the ISO 19139 metadata standard

Exploring an item's metadata

Changing the default stylesheet

Printing metadata

Creating and updating metadata

Metadata synchronization

Writing metadata documentation

Importing and exporting metadata with ArcCatalog

Importing and exporting metadata

Editing metadata

Using the FGDC metadata editor

Using the ISO metadata editor

Managing enclosures

Requirements for publishing metadata to an ArcIMS Metadata Service

Adding information required by the ArcIMS Metadata Service

Publishing metadata to an ArcIMS Metadata Service

Managing published metadata documents

Changing a published document's properties

Adding custom places to a Gazetteer Metadata Service

Customizing metadata
Image and raster data management
Data support in ArcGIS

An overview of data support in ArcGIS

Data formats supported in ArcGIS
CAD data
Coverages
NetCDF: multidimensional, time series data
Shapefiles

About shapefiles, dBASE tables, and file types

Shapefile file extensions

Creating new shapefiles and dBASE tables

Adding and deleting fields in shapefiles

Creating and updating indexes in shapefiles

Defining a shapefile's coordinate system

How to salvage a corrupt shapefile
Terrains
Extensions
Geocoding and address management
Linear referencing
Network analysis
Mobile GIS
Interoperability and standards support
Customizing and developing with ArcGIS

An overview of customizing ArcGIS
Customizing the user interface
Writing macros using VBA
Extending ArcGIS desktop applications
Guide to data that comes with ArcGIS
ESRI Data and Maps
Working with StreetMap data
Getting started with StreetMap
Geocoding addresses with StreetMap North America data
Finding a route using StreetMap North America data
Licensing and desktop administration

Administering the ArcGIS License Manager

Setting up license managers for ArcGIS 93 concurrent use products

Checking license availability

Viewing and changing the license manager

Common license manager problems and how to solve them

Setting the software product

Registering ArcView or ArcEditor and extensions

Evaluating an ArcGIS Desktop extension

Error reporting for ArcGIS software crash data

Frequently asked questions about error reporting
GIS Servers and services