EAS781 Practical Geophysics: The Tools and How to Use Them ArcGis Introduction ArcView ArcInfo...
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Transcript of EAS781 Practical Geophysics: The Tools and How to Use Them ArcGis Introduction ArcView ArcInfo...
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EAS781
Practical Geophysics: The Tools and How to Use Them
ArcGis Introduction
ArcView
ArcInfoArcGis
Arc/Info is an older program with a less user-friendly interface. Allfunctions or analyses must be completed by typing out a command line.We will not be using this program much during the semester, but it is agood idea to be somewhat familiar with it and also to see how far GIS hascome since it is early days.
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ArcMap--------Mapping and editing tasks.
ArcToolbox----Data conversion and analysis.
ArcCatalog----Database and file management.
(All copying, pasting, renaming, or deleting of coverages should be done within ArcCatalog. Not Windows Explorer).
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© ESRI
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© ESRI
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© ESRI
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• Using Windows NT explorer, Add a folder(“Project) on your computer. Within the Project directory, add some subdirectories for storing your input.
• Downloading or collecting what you need the spatial data. (The Cornell University Geospatial Information Repository (CUGIR) at the at the Mann Library website is quite useful). http://cugir.mannlib.cornell.edu/
Collecting the data what you need
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© Arthur J. Lembo, Jr.Cornell University
Data Input
• Data Input Includes:
– Existing maps
– Field observations
– Sensors
• Data input devices:
– Terminals
– Digitizers
– Scanners
– Hand Held Devices
– Field Collection Units(Total stations, digitalcameras)
DATA INPUT
FieldObservations
ExistingMaps
Sensors
Terminals Digitizers Scanners
Field UnitsHand Held
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Start ArcGison Lunpola
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Importing your data into a usable GIS format by ArcToolbox.
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Start ArcMAp
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Accept the initial default settings
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Add the coverage as a layer to the map
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Changing scale
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Open attribute table: Right click on the name of the coverage
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Elevation Numbers of records
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Metadata:Edit CreateImportExportPoperties
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To clip a coverage. You have to create a text file using, and enter the necessary data using the appropriate format.
After that, you need to run the arc/info.
NWNESESW
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ITEMS: instructs INFO to display or print the item structure of your currently selected data file, one of your currently related data files, or the system items file.
GENERATE: adds features to a coverage. Coordinates for each feature may be entered from the terminal or from a file.
BUILD: creates or updates a feature attribute table for a coverage.
DESCRIBE: provides a detailed description of a geographic data set and its contents.
LIST: lists item values for all records in the specified INFO data file.
The commands are used to create “clipcov”
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Editing Table
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Right click on the TOC to open field calculator
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Change projection
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Building topology
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