naikoa aguilar-amuchastegui
DESCRIPTION
Naikoa Aguilar-Amuchastegui. Forest Carbon Scientist REDD+ Forest and Climate Initiative. http://www.conservation.org/learn/climate/solutions/mitigation/Pages/climate_REDD.aspx. Introduction to Geographic Information Systems (GIS). EVS 485. - PowerPoint PPT PresentationTRANSCRIPT
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Naikoa Aguilar-Amuchastegui Forest Carbon Scientist REDD+ Forest and Climate Initiativehttp://www.conservation.org/learn/climate/solutions/mitigation/Pages/climate_REDD.aspx
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Introduction to Geographic Information Systems (GIS)
EVS 485
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Spatial Data •Map categories (e.g. Roads,
Real Estate)
Data base •Class, Speed limit, Surface type
Analysisinterface
•Software•Hardware
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Representing Cartographic Objects
Raster and Vector Data StructuresReal World
Vector Representation
Raster Representation
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Things are represented by Cartographic Objects
Do rivers or roads (linear features) have width?
Do point features have area?
Points Lines Areas
Individuals PopulationsLocations
LimitsPaths Streams Transects
Land Cover Ecoregion WatershedReef
Scale Class
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Maps (layers) Databases (by Theme) Mappable things
(features) Attributes
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GISAllows
Manipulation Editing Analysis Computer
interface Decision
making Problem
study Modeling
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• Information System (Group of data bases)• GIS
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Data Analysis – The Heart of GISProblem: Identifying Potential Sites for Industry
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We have a Party!
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Network Analysis (Routing)
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Spatial ModelingAllocation of conservation incentives in Nebraska? Land use/cover
NDVIElevationSlopeSoil Texture
Percent siltPercent sandPercent clay
DepthTo water tableTo bedrock
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Raster and Vector Data
Digital Elevation Model (DEM) – RasterCells (pixels)
Roads, Rivers, locations – VectorPoints, lines and Polygons
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So we measure the EMR that comes (emitted or reflected) from an object of interest and try to figure out its meaning!!!
Actually we do it all the time!!!!
We just need mindset training.
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“ Today, GIS is to mapping what word processing is to writing”
James Merchant Ph.D