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Lunchless Learn. First Encounters of the GIS Kind: An Introduction to the Basics of Geographic Information Systems. Agenda. What is GIS? Planning a trip to San Diego The Basics Q & A Session Evaluation. What if I have questions?.

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lunchless learn

Lunchless Learn

First Encounters of the GIS Kind:

An Introduction to the Basics of Geographic Information Systems

agenda
Agenda
  • What is GIS?
  • Planning a trip to San Diego
  • The Basics
  • Q & A
  • Session Evaluation
what if i have questions
What if I have questions?
  • Feel free to ask questions throughout the session – just raise your hand
  • There are no stupid questions

(trust us!)

  • One voice at a time please!
geographic information systems gis
Geographic Information Systems (GIS)
  • GIS is everywhere!
  • Used everyday
  • Used worldwide
with gis you can
With GIS you can…
  • Manage the environment
  • Work more efficiently
  • Provide better customer service
  • Save money
you can use gis to
Create maps

Find information

How?

Why?

Create & edit data

Solve problems

You can use GIS to:
learning objectives
Learning Objectives

A student who completes this module will be able to:

  • explore a GIS map and get information about map features
  • describe the structure of a GIS map
  • explain how a GIS represents real-world objects
  • access feature information
  • describe spatial relationships of map features
  • describe how GIS can be used to solve problems
first encounter with arcgis planning a trip to san diego
First Encounter with ArcGIS – Planning a Trip to San Diego

Step 1 – Start ArcMap

  • Open ArcMap
    • Click Start Button – All Programs – ArcGIS – ArcMap
first encounter with arcgis
First Encounter with ArcGIS

Step 1 – Start ArcMap

  • Open ArcMap
    • Click Start Button – All Programs – ArcGIS – ArcMap
  • Open
    • c:\temp\VirtualCampus\LearnArcGIS9\

Start\tourism.mxd

slide11

Page Layout

Window

Table of

Contents

slide12
Step 2 – Explore United States Map
  • Activate the United States Map
    • Right click on United States in Table of Contents – Choose Activate
slide14
Step 2 – Explore United States Map
  • Activate the United States Map
    • Right click on United States in Table of Contents – Choose Activate
  • Turn on/off State Data
    • Uncheck/check box next to States Layer
slide16
Step 3 – Zoom in to San Diego
  • Activate the San Diego Map
    • Right click on San Diego in Table of Contents – choose Activate
slide18
Step 3 – Zoom in to San Diego
  • Activate the San Diego Map
    • Right click on San Diego in Table of Contents – choose Activate
  • To see more details of San Diego
    • Zoom in using Zoom In tool
slide20
Step 3 – Zoom in to San Diego
  • Activate the San Diego Map
    • Right click on San Diego in Table of Contents – choose Activate
  • To see more details of San Diego
    • Zoom in using Zoom In tool
    • With Zoom still active click centre of map
    • Type 50000 into the Scale box
slide22
Step 3 – Zoom in to San Diego
  • Activate the San Diego Map
    • Right click on San Diego in Table of Contents – choose Activate
  • To see more details of San Diego
    • Zoom in using Zoom In tool
    • With Zoom still active click centre of map
    • Type 50000 into the Scale box
    • Use Pan tool and click and drag
slide26
Step 4 – Switch to Data View and Label Hotels
  • Switch to Data View window
  • Turn on Hotels so they are viewed on Map
    • Table of Contents – check box next to Hotels
  • Get Hotel name
    • Zoom into cluster of hotels on coast – click the Select tool and place mouse over hotel symbol
slide28
Step 4 – Switch to Data View and Label Hotels
  • Switch to Data View window
  • Turn on Hotels so they are viewed on Map
    • Table of Contents – check box next to Hotels
  • Get Hotel name
    • Zoom into cluster of hotels on coast – click the Select tool and place mouse over hotel symbol
  • Turn on the names of all Hotels at once
    • Right click on Hotels in Table of Contents – choose Label Features
slide30
Step 5 – Find Hotel and get Information about it
  • Find all Marriott Hotels in San Diego
    • Click Find tool – In Find Field type Marriott - Click dropdown arrow next to In and choose Hotels – Click Find
slide32
Step 5 – Find Hotel and get Information about it
  • Find all Marriott Hotels in San Diego
    • Click Find tool – In Find Field type Marriott - Click dropdown arrow next to In and choose Hotels – Click Find
  • Find Marriott Suites Hotel on Map
    • Right click on Marriott Suites Hotel – Click Flash Feature
slide34
Step 5 – Find Hotel and get Information about it
  • Find all Marriott Hotels in San Diego
    • Click Find tool – In Find Field type Marriott - Click dropdown arrow next to In and choose Hotels – Click Find
  • Find Marriott Suites Hotel on Map
    • Right click on Marriott Suites Hotel – Click Flash Feature
  • Get Telephone number of Hotel
    • In Find Dialogue right click Marriott Hotel and Marina – choose Identify Feature
slide36
Step 5 – Find Hotel and get Information about it
  • Find all Marriott Hotels in San Diego
    • Click Find tool – In Find Field type Marriott - Click dropdown arrow next to In and choose Hotels – Click Find
  • Find Marriott Suites Hotel on Map
    • Right click on Marriott Suites Hotel – Click Flash Feature
  • Get Telephone number of Hotel
    • In Find Dialogue right click Marriott Hotel and Marina – choose Identify Feature
  • Select Hotel
    • Find Dialogue - Right click on Marriott Hotel and Marina - Choose Select Feature
slide38
Step 6 – Get Info on Major Attractions
  • Show Major Attractions
    • Table of Contents – Check Major Attractions – right click choose Open Attribute Table
slide40
Step 6 – Get Info on Major Attractions
  • Show Major Attractions
    • Table of Contents – Check Major Attractions – right click choose Open Attribute Table
  • Sort Table
    • Scroll through attributes – Right click on Name field – choose Sort Ascending
slide42
Step 6 – Get Info on Major Attractions
  • Show Major Attractions
    • Table of Contents – Check Major Attractions – right click choose Open Attribute Table
  • Sort Table
    • Scroll through attributes – Right click on Name field – choose Sort Ascending
  • Find Seaport Village
    • Scroll through list until you find Seaport Village – click grey box left of record
  • Close Table
slide44
Step 7 – Measure Distance Between Features
  • Zoom into area with Hotel and Seaport Village
  • Measure Distance
    • Click Measure Tool - single click on Marriott Hotel and Marina – move mouse over Seaport Village – double click and check distance
slide46
Step 8 – Find Attractions and Determine Method of Transportation
  • Clear Selected Features
    • Selection menu – choose Clear Selected Features
slide48
Step 8 – Find Attractions and Determine Method of Transportation
  • Clear Selected Features
    • Selection menu – choose Clear Selected Features
  • Show map of San Diego
    • View menu – Bookmarks – San Diego City
  • Turn off Major Roads
    • Table of Contents – Uncheck Major Roads
slide50
Step 8 – Find Attractions and Determine Method of Transportation
  • Clear Selected Features
    • Selection menu – choose Clear Selected Features
  • Show map of San Diego
    • View menu – Bookmarks – San Diego City
  • Turn off Major Roads
    • Table of Contents – Uncheck Major Roads
  • Label Major Attractions
    • Table of Contents – right click Major Attractions – choose Label Feature
slide52
Step 8 – Find Attractions and Determine Method of Transportation
  • Clear Selected Features
    • Selection menu – choose Clear Selected Features
  • Show map of San Diego
    • View menu – Bookmarks – San Diego City
  • Turn off Major Roads
    • Table of Contents – Uncheck Major Roads
  • Label Major Attractions
    • Table of Contents – right click Major Attractions – choose Label Feature
  • Get details on the closest Trolley Stops
    • Click Identify tool - Layer Dropdown choose Trolley Stops – on map click stop closest to Qualcomm Stadium – close Identify window
slide54
Step 9 – Use Hyperlink for San Diego Zoo Website
  • Zoom to San Diego Zoo
    • Find San Diego Zoo – Zoom in tool
  • Access San Diego Website info through Hyperlink
    • Click Hyperlink tool - click on San Diego Zoo symbol on map
slide56
Step 10 – End ArcMap Session
  • Close ArcMap
    • File menu – choose Exit – Click no when asked if you want to save data
exploring a gis map
Exploring a GIS map
  • Dynamic
  • Zoom, pan, resize
  • Add/remove features
  • Change symbolization
  • Access database of information
how is a gis map organized
How is a GIS map organized?
  • Data frames
  • Thematic layers
  • Features
how is a gis map organized1
Features have:

Location

Shape

Symbol

Features grouped in a layer have:

Same shape

Same characteristics

AND they are located within the same geographic extent

How is a GIS map organized?
layers
Layers
  • Contain features located within the same boundary
  • Each represents a distinct "theme"
  • Are drawn on top of each other to create an informative GIS map
representing the real world
Point

Line

Polygon

One coordinate pair

Sequence of 2 or more coordinate pairs

One or more lines whose start and end coordinate pairs are the same

Representing the real world

GIS world – 3 types of features:

representing the real world1
Representing the real world

In this map of South America…

  • What are countries represented as?
  • Rivers?
  • Cities?
representation
Polygons

Lines

Points

objects with boundaries

countries, building footprints, lakes

objects too narrow to be polygons

streets, rivers, telephone lines

objects too small to be polygons

cities, trees, hospitals

Representation*

* Depends on map scale

linking features to information
For a road

For a city

Name

Speed

Direction (one-way or two-way)

Population

Average monthly temperature

Number of schools

Linking features to information

More than just location and shape Information associated with feature

feature attributes
Feature attributes
  • Types or categories of information
  • Stored in attribute table
  • Each feature is a record (row); Each attribute is a column or field
  • Same layer, same attribute table
feature attributes1
Feature attributes
  • This attribute table for a layer of cities stores each feature's ID number, shape, name, the country in which it's located, and its status.
feature attributes2
Feature attributes
  • Features are linked to attributes by a unique numerical identifier (ID)
  • Every feature has an ID
  • One-to-one relationship between feature, identifier and attribute record
feature attributes cont d
Feature attributes cont’d
  • Click feature on map – see attributes in table
  • Select record in table – selects feature on map
  • Ask questions of attribute table – display answer on map
example
Example
  • The city of Bombay is selected. Its record is also selected in the attribute table. The unique identifier for Bombay is stored in the FID field.
understanding map scale
Understanding Map Scale

Scale - the relationship between size on the map and size in the real world

  • Expressed as a ratio, or representative fraction (RF)

A scale of 1:50,000 means one unit on the map equals 50,000 units on earth.

It also means that the objects on earth are 50,000 times larger than the features on the map.

map scale
Map Scale

Two types:

Large-scale

Small-scale

Covers a small area in more detail

Covers a large area in less detail

Examples?

credits
Credits

This demonstration was created using course materials from ESRI’s Virtual Campus.

If you are interested in taking more Virtual Campus courses, please contact the GIS Centre.

gis centre
GIS Centre

Located at the back of the

Learning Commons on the first floor

of the Killam Library

Jennifer Milne

Jennifer.Milne@dal.ca

494-6719

Jennifer Strang

Jennifer.Strang@dal.ca

494-1386