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Habitat Analysis in ArcGIS. Use of Spatial Analysis to characterize used resources Thomas Bonnot. http://web.missouri.edu/~bonnott/. Introduction. GIS Modeling Summarizing characteristics of resources associated with fish and wildlife use Resource Selection, Survival, Movement - PowerPoint PPT Presentation
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Habitat Analysis in ArcGIS
Use of Spatial Analysis to characterize used resources
Thomas Bonnot
http://web.missouri.edu/~bonnott/
Introduction
• GIS Modeling– Summarizing characteristics of resources
associated with fish and wildlife use• Resource Selection, Survival, Movement• Descriptive and Exploratory Purposes
– Types of GIS Data Involved
• Organization and Preparation of Data
• Ways to automate Geoprocessing
Spatial Analysis• Spatial Analysis: The study of the
locations and shapes of geographic features and the relationships between them
• Measuring distances between points • Modeling the behavior of ecosystems
• Geoprocessing ToolsTools that prepare, manipulate, and analyze data spatially
Characterizing resources associated with features of use
• Inputs– Features representing use
– Resource or environmental data of interest
Spatial Features
Types of features in ArcGIS
1) Point Nest Site; Telemetry Location
2) Line Movement Path; River; Xsct
3) Polygon Home Range; Nest Plot
Spatial Features cont.
• Feature Class– Group of features of the same geometry– Can be filed in different formats
Shapefile
Resource Data• Contain information and data about the
resources of interest
• Can be feature classes
Rasters• Made up of square cells
• Each cell represents a specific portion of an area– Describes location and relative position in space– And the characteristics of that area
Rasters Containing Thematic Data
• Represent some measured quantity or classification of a particular phenomena
Image Rasters
• Images or photographs
• Still composed of cells
• Cells represent colors or spectral reflectance
Missouri Land Cover, Classified Satellite Imagery – 30m
USDA NAIP Color Infrared Aerial Photography – 1m
Digitized Land Cover for Study Site
Have the Data.How do we characterize?
Use Features
Resource DataLayers
Geoprocessing for Characterizing Used Resources
UseFeature
ResourceData Geoprocessing Tool
PointsFeature Class Spatial Join
Polygons
PointsRaster Zonal Statistics as Table
Polygons
Polygons PolygonsClip then Calculate Areas
(When summarizing areas of polygons in polygons)
Geoprocessing for Characterizing Used Resources
UseFeature
ResourceData Geoprocessing Tool
PointsFeature Class Spatial Join
Polygons
PointsRaster Zonal Statistics as Table
Polygons
Polygons PolygonsClip then Calculate Areas
(When summarizing areas of polygons in polygons)
Right Click on the Layer and go to “Joins and Relates”
Geoprocessing for Characterizing Used Resources
UseFeature
ResourceData Geoprocessing Tool
PointsFeature Class Spatial Join
Polygons
PointsRaster Zonal Statistics as Table
Polygons
Polygons PolygonsClip then Calculate Areas
(When summarizing areas of polygons in polygons)
Geoprocessing for Characterizing Used Resources
UseFeature
ResourceData Geoprocessing Tool
PointsFeature Class Spatial Join
Polygons
PointsRaster Zonal Statistics as Table
Polygons
Polygons PolygonsClip then Calculate Areas
(When summarizing areas of polygons in polygons)
Organizing Data Tables in ArcGIS
• Important Consideration in Spatial Analysis
• Geoprocessing Tools produce outputs in different tables and with different formats
• Joining and Summarizing Tables
Joining TablesGetting output data into master datasets
Common Attribute(Unique Identifier)
Master Dataset Output from Tool
Desired Attribute
• Right Click on the Layer• Go to “Joins” “Relates”
Summarizing Tables
Multiple Records
For
the Same Feature
When output tables have
• Right Click on the Field• Go to “Summarize”
Choose statistic to summarize
Model Builder to automate Geoprocessing
• Create Models to link together multiple Geoprocessing Tools
• Can set parameters ahead of time or allow for them to be entered manually
• Right click on a Toolbox• Go to “New” “Model”
• Click and Drag tools to Model Builder Window • Connect tools together so that outputs from one tool become inputs for the next
To Create Parameters• Right click on Tool• Go to “Make Variable” “From Parameter”• Select the parameter for use in the dialogue box
After saving the model, open the model from ArcToolbox to see a dialogue box where you can specify the input and output parameters
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