CFR 250/590 Introduction to GIS © Phil Hurvitz, intro_overview.ppt Introduction-Overview Why use a GIS? What can a GIS do? How does a GIS work? GIS definitions _

CFR 250/590 Introduction to GIS © Phil Hurvitz, intro_overview.ppt Why use a GIS? An extension of the paper map, but much more than a map, as you will see. GIS uses the analytical power of the computer to complete complex tasks. Computer's storage power to manage large data sets. Integration of many different types of data from many different sources. GIS maps a variety of different data to the same coordinate space (combination). More media stable than paper media, and easier to distribute via the net. Faster and easier update. Creation and use of "one-time" maps. Tailor-made maps. Elimination of some user bias. GIS brings new tools for thinking differently about geographic data. _

CFR 250/590 Introduction to GIS © Phil Hurvitz, intro_overview.ppt What can a GIS do? Locate geographic features based on properties. Identify and analyze properties of geographic features based on location. Estimate economic effects of land-use regulation. Determine the optimal locations of new businesses. Generate optimal routing and scheduling delivery and repair services. Determine the ground area covered by a new cellular phone network. Delineate watershed boundaries. Predict vegetation types based on elevation, slope, and aspect. Predict landslide hazard for harvest units. Epidemeology. Locate natural areas that need protection. Make colorful and interesting maps. _

CFR 250/590 Introduction to GIS © Phil Hurvitz, intro_overview.ppt Examples of what a GIS can do Example 1: Where is a given feature or set of features? Where are forest stands greater than 100 years of age?

CFR 250/590 Introduction to GIS © Phil Hurvitz, intro_overview.ppt Examples of what a GIS can do Example 2: What features are at a given location? What is the age of the forest near the 1050 Road?

CFR 250/590 Introduction to GIS © Phil Hurvitz, intro_overview.ppt Examples of what a GIS can do Example 3: Where are areas that meet a given complex set of criteria? What parts of the forest are located: on > 30% slope? closer than 100 ft to a stream, and farther than 50 ft from a road,

CFR 250/590 Introduction to GIS © Phil Hurvitz, intro_overview.ppt Examples of what a GIS can do Example 4: How can operation costs be calculated with a GIS? What is the average yarding distance for each stand in the forest?

CFR 250/590 Introduction to GIS © Phil Hurvitz, intro_overview.ppt Examples of what a GIS can do Example 5: How can watershed analysis data be generated within a GIS? What are the road and stream densities (mi / sq. mi) for the forest area?

CFR 250/590 Introduction to GIS © Phil Hurvitz, intro_overview.ppt Examples of GIS maps topographic mapping

CFR 250/590 Introduction to GIS © Phil Hurvitz, intro_overview.ppt Examples of GIS maps orthophoto image maps

CFR 250/590 Introduction to GIS © Phil Hurvitz, intro_overview.ppt Examples of GIS maps surface drapes & 3-D modeling

CFR 250/590 Introduction to GIS © Phil Hurvitz, intro_overview.ppt Examples of GIS maps classified thematic mapping

CFR 250/590 Introduction to GIS © Phil Hurvitz, intro_overview.ppt Examples of GIS maps research documentation

CFR 250/590 Introduction to GIS © Phil Hurvitz, intro_overview.ppt How does GIS work? tabular data Combination of and coordinate data each feature has a record

CFR 250/590 Introduction to GIS © Phil Hurvitz, intro_overview.ppt GIS definitions "A system of hardware, software, and procedures designed to support the capture, management, manipulation, analysis, modeling and display of spatially- referenced data for solving complex planning and management problems." A working GIS integrates five key components: methods people, and data, software, hardware,