Notes
Outline
GIS and Remote Sensing
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Geographic Information Systems
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Questions a GIS can Answer
What is at a location?
Where do certain conditions exist?
What are the trends over time?
Do some patterns exist on the maps?
What schools are located within a certain distance from a factory?
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Vector Data - Points, Lines and Polygons
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Tabular Data
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Satellite Imagery
Raw Data - Bands 4, 5, 3
Bands 4, 5, 3 - 1999
Land Cover - 1988
Land Cover - 1999
Change Analysis - ‘88 -’99
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Spatial Data Formats
ArcGIS can use multiple data formats
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One Feature – One Record
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One Feature – One Attribute
Raster: the pixel file
Each Pixel Contains a Value
Computer Aided Design (CAD)
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Tabular Data
Notes