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- 1What is GISA system for managing spatial information
-smart map linking'
- a set of tools for storing, visualizing, querying, editing, and analyzing - 24 Sub Systems of GIS1. Data Input
2. Data Storage and Management
3. Manipulation and Analysis
4. Output - 33 Views of a GISGeoprocessing
Geovisualization
Geodatabase - 4Elements of GIS1. Software
2. Hardware
3. Data
4. People
5. Methods - 5Maps are _____ tools of geography and GIS.Maps contains ____________ amounts of information because of the graph nature.
- 6Basic elements of a map are- Points
- Lines
- Polygons - 7Common GIS representationStreams --- Lines
Urban Areas --- Polygons
Well locations --- Points
Satellite imagery --- Rasters - 8GIS allows us to: visualize understand quest ion interpretTraditional maps are __________
GIS maps are ___________ and are often products of a GIS - 9Author - creates data and ______ Share - place maps and data online to be accessed through a browser Use - view maps and _______, analyze and share resultsWhat can you do with GIS?
- map where things are
- map densities
- find what's nearby
- where things are - 10Location analysis - map where things are Quantities - population by zip code (higher in red) Density Map overlay - (ex. we can quantify the # of starbucks in a zipcode)Proximity analysis - what's nearby
Map Change - Is displayed by zip code - 11Steps for a GIS Project1. Frame the Question
2. Select your Data
3. Choose an analysis method
4. Process the Data
5. Look at the results - 12Frame the QuestionEstablish an objective
- 13Select your datagather, organize, and prepare your data for analysis
- 14Choose an analysis methodselect appropriate geoprocessing tools to process the data
- 15Process the dataperformed using geoprocessing tools
- 16Look at the resultsanalyze the results, make conclusions, arrive at decisions, and present your results
- 17Data CreationDigitized and Scanned Maps
- 18GIS Data TypesSpatial
Attribute - 19Spatial DataDescribes the absolute and relative location of geographic features
- 20Attributedescribes characteristics of the spatial features.
Can be quantitative and/or qualitative - 21The coordinate location of a forestry stand would be spatial data, while the characteristics of that forestry stand, e.g. cover group, dominant species, crown closure, height, etc., would be attribute dataSpatial Data Models
- Vector
- Raster
- Image - 22Vector Data Modelrepresents each feature as a row in a table, defined by (x,y) coordinates
- 23Vector Data ModelFeatures can be discrete locations or events, lines, or polygons
- 24Raster Data Modelrepresents features as a matrix of cells in a continuous space
- 25Each layer in the raster data model represents one __________Raster Data - Aerial Imagery
Raster Data - Surface Elevation - 26GIS can be used for Decision SupportRouting
Site Selection
Planning
Policies - 27Commonly performed Analysis - Map overlay - Proximity Analysis - Network AnalysisSpatial Analysis Questions
Simple: who owns the land parcel?
Analytical: what's the dominant soil type?
Proximity: how many
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- Karteikarten am Ohne Titel, erstellt von Domeda Duncan am 09/06/2015.
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- Domeda Duncan
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