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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
Geographic transformations
Supported map projections
Vertical coordinate systems
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

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 attributes

Copying and pasting attributes

Deleting attributes

Editing with default values and attribute domains

About updating data using SQL
Editing annotation
Editing dimension features
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

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

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

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

About accessing tools with geoprocessing scripts

Creating the geoprocessor object

Differences between geoprocessor versions

Adding and removing toolboxes

Tools and methods

Running a tool

Getting results from a geoprocessing tool

Message types and severity

Getting messages

Error handling with Python

Setting paths to data

Complex parameters

Tool names and name conflicts

Listing tools, toolboxes, and environment settings

Using ArcObjects as tool input

Using environment settings

Access to licensing and extensions
Creating script tools
Batch processing with geoprocessing scripts
Data properties and access when scripting
Working with AMLs
Scripting object: Properties and Methods

Geoprocessor object

Geoprocessor programming model
Properties and Methods
Geoprocessing environments

An overview of geoprocessing environments

Environment levels and hierarchy

Script environments

Specifying application environment settings

Specifying tool environment settings

Specifying model environment settings

Specifying model process environment settings
Environment categories
Documenting tools and toolboxes
Sharing tools and toolboxes

An overview of sharing tools and toolboxes

Methods for distributing tools

Pathnames explained: Absolute, relative, UNC, and URL

A structure for sharing tools

Sharing and connecting to UNC pathnames

Accessing ArcSDE data in tools

Techniques for sharing Python scripts

Managing intermediate data in shared models

Sharing stylesheets

Checklist for sharing tools and toolboxes
Geoprocessing with ArcGIS Server
Keeping track of geoprocessing history
Advanced modeling through simulations
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
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
Network analysis
Mobile GIS

An overview of Mobile GIS
ArcGIS Mobile integration
GPS
Tablet PC
ArcPad integration
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
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
Authoring and publishing services for ArcGIS Server
Administering ArcGIS Server with ArcCatalog
Creating and publishing web maps for ArcGIS Server