IntroductionToGIS with Karl Krauter

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 ?

G I S G eographic G eographic: location A location somewhere on, above, or below the Earth. I nformation I nformation: attributes Qualities or attributes of a geographic location. S ystem S ystem: Tools Tools used to develop, query, and display geographic information.

Tools include: Hardware PCUNIXMAC PlottersDigitizersScanners Software Arc/InfoArcView People Training Networked with others

Layers of geographically referenced data

G I S is a process which looks at the relationships of layers by asking questionsquestionsquestions: 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.

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 earthquake happened on the Carson Valley Fault range Carson Valley Fault range Earthquake Event How many events happened in 1976

Hands on GIS 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. To find the answer to this GIS question What layers / themes are needed ? DEMs Major roads

Hands On ArcView 3.2 Project Window View Window Table Window Charts Window Layout Window Script Window

Announcements: ArcView is available for $ for each module Call E.S.R.I Ext you will need to fax your class schedule

G I S What is it ? It is a process which looks at the relationships layers between layers of geographic information

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.

layer A layer is a theme of various features: LAYERS Locations(points) Lines(arcs) Areas(polygons) Images(raster) TIFFDEMGrids An x,y value A series of x,y locations A closed series of x,y locations

Project overview figure

Key Terms

Feature Class - Points An x,y location

Feature Class - Line A series of x,y locations

Feature Class - Area (polygons) A series of x,y locations that are closed

Introduction to ArcView What is it? How does it work?

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

Data Management Metadata Scale Why doesn’t my data fit? Projection Data Creation Why doesn’t my data fit? Metadata is data about your data.

Data Input Various methods: Digitize Digitize Tablet On Screen digitizing Digitize in a desktop type program program Scanning Take from other source

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 - Some other locations in Canada GIS questions:

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

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 ?

Data Manipulation Data that intersects other data Data that falls within a distance of other data Two data layers joined together to produce another data layer

How do you want others to view your results? In ArcView -> -> -> Layouts Who is your audience ? What colors or line type presents my results best?