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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
Vertical coordinate systems

About vertical coordinate systems

Vertical datums

Geoid
Mapping and visualization
An overview of mapping and visualization
Using ArcMap
Working with layers

Adding layers to a map

Adding x,y coordinate data as a layer

Changing a layer's drawing order

Changing a layer's text description

Setting layer properties

Managing group layers

Saving a layer to disk

Copying layers

Displaying layers at certain scales

Displaying a subset of features in a layer

Repairing broken data links

Viewing a layer's metadata in ArcMap
GIS service layers
Navigating and interacting with maps
Adding graphics and text to maps
Symbolizing data
Animation
Getting started with animation
Animation concepts
Building animations
Playing animations
Editing animations
Saving, exporting, and loading animations
Common animation work flows
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

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
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
Using a digitizer
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

About editing relationships and related objects

Editing relationships and related objects
COGO
Geoprocessing

What is geoprocessing?

A whirlwind tour of geoprocessing

Geoprocessing tools

Geoprocessing framework

Frequently Asked Questions about geoprocessing
Fundamental tool concepts
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
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
Sharing tools and toolboxes
Keeping track of geoprocessing history
Advanced modeling through simulations
Geoprocessing tool reference
Geodatabases and ArcSDE
Data management with ArcCatalog
Data support in ArcGIS
Extensions
Geocoding and address management
Linear referencing
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
Customizing and developing with ArcGIS
Guide to data that comes with ArcGIS
ESRI Data and Maps
Working with StreetMap data
Licensing and desktop administration
ArcGIS Image Server
GIS Servers and services