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GIS I - GROUP ONEtext (Spatial Data Analysis (Map Algebra (Local Functions…

- - - - Arcs
      - Nodes
      - Vertices
    - - Standard Coordinates: (X,Y)
  - - - Adjacency
      - Connectivity
  - - - Coverages (Topological)
      - Shapefiles (Non-topological
    - - Geodatabase (Feature relational)
- - - - 0,1
    - - 0-126
  - - - Type
      - Domain
- - - - Universal Transverse Mercator grid system (UTM)
        
        Zones 6 degrees wide in longitude
        
        Extends from 80 degrees south latitude to 84 degrees north latitude.
      - State Place Coordinate System (SPCS)
- - - - Data source
      - Projection and datum information
      - Authors name
      - Date
- - - - Map Services
      - Locally Stored
        
        Web Feature Services
        
        Web Mapping Services
        
        Web Coverage Services
  - - - On -Screen Digitizing
      - Manual Digitizing
    - - Node and line snapping
      - line smoothing
      - 'skeletonizing' or line thinning
  - - - Editing/Cleaning
        
        Re-Projection
        
        Generalization
        
        Edge Matching and rubber sheeting
        
        Layering
    - - Integrated GIS database
- - - - Inception 1976
      - 24 satellites completed constellation in 2011
    - - Inception 2011
      - 4 satellites currently
      - Plan calls for 30 satellites
    - - Part 2: Control Segment
        
        Ground and space based facilities for tracking, communication, data gathering and analysis
      - Part 3: User Segment; (GNSS receivers)
      - Part 1: Satellite Segment
        
        Navstar GPS Satellite Segment: A worldwide radio-navigation system of 24 - 31 satellites
        Orbiting at 12,675 Miles (20,400 Km)
        
        Positioned in 6 evenly spaced orbital planes (2 – 3 satellites per plane)
        4-7 satellites (sometimes up 10-12 with no obstructions) are visible from any point on earth at all times
    - - Inception 1973
      - Fully operational 1995
      - 30 Satellites in orbit
    - - Fundamental frequency
        
        Carrier signals (L1, L2, L5, L1C, L2CM, L2CL)
        
        Pseudorandom code (C/A, P, M)
      - Satellite status and location
        
        Almanac
        
        Satellite status data
        
        Ephemeris data
        
        position of satellite and others in GPS constellation
    - - Ionospheric
      - Atmospheric
- - - - Ground Surveys
      - Aerial Surveys
      - LiDAR Surveys
  - - - NHDPlus
      - Organized by Hydrologic Units
  - - - National Wetlands Inventory (NWI)
      - National Landcover Data (NCLD)
      - Natural Resource Conservation Service (NRCS) w/ National Soil Geography (NATSGO, STATSGO, SSURGO)
      - Federal Emergency Management Agency (FEMA) flood plain data, 100 year floodplain map
      - Census Data (TIGER)
- - - - NSDI
    - - ISO/TC211
  - - - Format Standards
      - Accuracy Standards
      - Media Standards
      - Documentation Standards
- - - - Measure the amount of EMR reflected off objects
    - - Sends out energy signal that is reflected back to sensor
  - - - Sources of error
      - Georeferenced to real world (lat/long)
      - Orthorectified to minimize distortion
  - - - World View
      - GeoEye
      - Pleiades
      - SPOT
    - - MODIS
      - VEGETATION
      - MERIS
    - - Landsat
      - Resourcesat
      - RapidEye
    - - Spatial
      - Spectral
      - Temporal
      - Radiometric
- - - - Set algebra
        
        <
        
        =
        
        >
      - Boolean Algebra
        
        OR
        
        AND
        
        NOT
        
        XOR
  - - - Addition
      - Subtraction
      - Multiplication
    - - Cell Value example: Inlayer * (number value)
    - - Cell value example: Layer A + Layer B= Sumlayer
    - - POWER
      - SQRT, ROOT
      - ROUND
      - MODULUS
      - INT, TRUNC
      - SIN, COS, TAN, ASIN, ACOS, ATAN
      - EXP, EXP10, LN, LN10
      - Add, subtract, multiply, and divide
      - ABS (Absolute value of each cell
  - - - via attribute data query (SQL)
    - - via spatial or topological relationships
      - ArcToolbox; Analysis tools & data management tools
    - - dissolve tool
      - elimate tool
      - buffer tool
      - dissolve tool
    - - select by location
      - extraction and overlay tools
  - - - Straight Line Distance
      - Row-Column Distance
    - - Metadata/properties
      - Histogram
      - Summary statistics
      - Identify values of individual cells