GTECH 361 Lecture 02 Introduction to Arc GIS
- Slides: 33
GTECH 361 Lecture 02 Introduction to Arc. GIS
Today’s Objectives n n n n n explore a map and get information about map features preview geographic data and metadata add data to a map describe the structure of a map explain how a GIS represents real-world objects change the way features are drawn on a map access feature information in different ways describe spatial relationships of map features describe how GIS can be used to solve problems
GIS Map Organization
Representation n Point, line, and polygon features
Geo-Relational Principle 1
Geo-Relational Principle 2
Scale
The Arc. GIS Suite
System Architecture
Arc. Map
Map Production
Arc. Catalog
Arc. Catalog Views
Arc. Toolbox
Metadata
Metadata in Arc. GIS
Help
GIS Data Formats
Maneuvering Arc. GIS
Connecting to Folders
Table of Contents
Exploring a Map
Making Appearances
Making Appearances part 2
Localized Information
Spatial Relationships 1 n Distance Which countries contain a lake completely within their borders? Which cities are located within 25 kilometers of a river?
Spatial Relationships 2 n Intersection Which countries have a river that intersects their border?
Spatial Relationships 3 n Adjacency Which countries share a border with Russia?
Spatial Relationships 4 n Containment Which countries contain a lake completely within their borders?
GIS as a Process 1 1. Capture data 2. Store data 3. Query data 4. Analyze data 5. Display data 6. Present data
GIS as a Process 2 1. 2. 3. 4. 5. Ask a geographic question Acquire geographic data Explore geographic data Analyze geographic information Act on geographic knowledge
Summary n n n A GIS organizes and stores information about the world as a collection of thematic layers. Each layer contains features with the same shape and attributes, all located within a common geographic area. Each feature is assigned a unique numerical identifier and is characterized by a unique location in space and a corresponding record in a table. Features can be stored in a GIS as three primary shapes: points, lines, or polygons. Features have spatial relationships with other features, and with a GIS you can find features based on their spatial relationships. The geographic inquiry process provides a framework for solving problems with GIS.
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