To

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Introduction To GIS
with Karl Krauter
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An organized collection of computer
hardware software, geographic data, and personnel
designed to efficiently capture, store, update,
manipulate, analyze, and display all forms of
geographically referenced information.
WHAT IS A GIS ?
WHAT IS A GIS ?
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G
Geographic
A location somewhere on , above, or below the
Earth.
Qualities or attributes of a geographic location.
I
Information
System
Tools used to develop, query, and
display geographic information.
S
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Tools include
Hardware
Plotters
Digitizers
Scanners
PC
UNIX
MAC
Software
Arc/Info
ArcView
People
Networked with others
Training
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Layers of geographicallyreferenced data
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G I S
is a process which looks at the relationships of
layers by asking
questions
questions
questions
Who is within a distance of...
What would happen if...
When was the last time...
Where is a specific location of...
How far from one location to another...
How many occurrences of an event are within a
distance of a location.
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Examples of GIS questions asked
Desert Game Range
What is the total area of industrial minerals ?
Potential Radon Hazard
Where are the potential radon hazards ?
Earthquake Scenario
What would happen in Reno if a 7.1 earthquake
happened on the Carson Valley Fault range
Earthquake Event
How many events happened in 1976
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The Question
Hands on GIS
Find all the areas of possible avalanche where
south facing slopes are greater than 30, and
are within 150 meters of a major road.
To find the answer to this GIS question What
layers / themes are needed ?
DEMs
Major roads
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Hands On ArcView 3.2

• Project Window
• View Window
• Table Window
• Charts Window
• Layout Window
• Script Window

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Announcements
ArcView is available for 250.00 for each module
Call E.S.R.I. 1-888-377-4575 Ext. 1499 you will
need to fax your class schedule
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G I S
What is it ?
It is a process which looks at the relationships
between layers of geographic information
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G I S
An organized collection of computer hardware,
software, geographic data, and personnel designed
to efficiently capture, store, update,
manipulate, analyze, and display all forms of
geographically referenced information.
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LAYERS
A layer is a theme of various features


Locations
(points)

An x,y value
Lines
(arcs)
A series of x,y locations
Areas
(polygons)
A closed series of x,y locations
Images
(raster)
TIFF
DEM
Grids
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Project overview figure
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Key Terms
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(No Transcript)
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Feature Class - Points
An x,y location
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Feature Class - Line
A series of x,y locations
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Feature Class - Area (polygons)
A series of x,y locations that are closed
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Introduction to ArcView

• What is it?
• How does it work?

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Analysis

• Attribute Query Non Spatial Analysis
• Spatial Query
• Spatial Join
• Theme on Theme
• Within a distance
• Are completely within
• Buffer Analysis
• Boolean Analysis (Raster)

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Data Management
Metadata
Scale
Why doesnt my data fit?
Projection
Why doesnt my data fit?
Data Creation
Why doesnt my data fit?
Metadata
is data about your data.
is data about your data.
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Data Input
Various methods
Digitize Tablet
Digitize
On Screen digitizing
Digitize in a desktop type program
Scanning
Take from other source
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What is available in additional training ?
University of Nevada, Reno
Introduction To G I S Spring / Fall
Short course in GIS Summer
TMCC - Various short courses in ArcView
WNCC - Intro To GIS, Fall
E.S.R.I. - Various week long classes
Internet classes - www.esri.com Some other
locations in Canada
GIS questions krauter_at_unr.edu
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Recommended Books

• Getting to Know ArcView GIS by Pat Breslin,
  Nick Frunzi, Eileen Napoleon, and Tim Ormsby
• ArcView Exercise Book, by Pat Hohl with Brad
  Mayo

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What is the question ?
Find all the areas of possible avalanche where
south facing slopes are greater than 30, and
are within 150 meters of a major road.
Do your results seem reasonable ?
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Data Manipulation
Two data layers joined together to produce
another data layer
Data that intersects other data
Data that falls within a distance of other data
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How do you want others to view your results?
In ArcView
-gt
Layouts
-gt
-gt
Who is your audience ?
What colors or line type presents my results
best?