esrm 250 cfr 520 autumn 2009 phil hurvitz
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Exporting GIS Data. ESRM 250/CFR 520 Autumn 2009 Phil Hurvitz. Overview. Why export? Converting vector datasets to shapefiles/ geodatabase feature classes Converting image data sets to grids Exporting grid datasets to generic raster format

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esrm 250 cfr 520 autumn 2009 phil hurvitz
Exporting GIS Data

ESRM 250/CFR 520

Autumn 2009

Phil Hurvitz

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overview
Overview
  • Why export?
  • Converting vector datasets to shapefiles/geodatabase feature classes
  • Converting image data sets to grids
  • Exporting grid datasets to generic raster format
  • Exporting vector datasets to ArcInfo generate format
  • Exporting tables
  • "Exporting" views and layouts
  • Exporting 3D scenes as VRML
  • Exporting to KML

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why export
Why export?
  • Sharing data with others
    • ArcGIS users
    • Users of other software
  • Integration with desktop publishing applications
  • Export-and-archive

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converting vector datasets to shapefiles gdb feature classes
Converting vector datasets to shapefiles/gdb feature classes
  • Any supported vector data source can be converted to shapefile or geodatabase feature class
  • Polymorphic data sources need to be converted to several output data sets
      • one CAD file can contain multiple layers
      • one ArcInfo coverage can contain multiple layers
  • Shapefiles can be moved, copied, or archived easily & safely even with OS (better with ArcCatalog
  • Feature subsets can be created

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converting image datasets to grids
Converting image datasets to grids
  • Generic image formats are frequently used as interchange files
  • Supported image formats can be converted to grids
  • Grids obtain cell values from image pixel values
  • Multi-band images can be converted to a series of grids
  • Possible to use raster analysis on image data

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exporting grid datasets to generic raster format
Exporting grid datasets to generic raster format
  • Grids are proprietary ESRI file format
  • Possible to export to “generic” raster format
  • Generic formats can be imported by other GIS or image analysis applications
  • ASCII generic raster format
    • Single file containing both header lines & data
  • Binary generic raster format
    • 2 files created: header ASCII file, binary raster data file

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exporting vector datasets to arcinfo generate format
Exporting vector datasets to ArcInfo generate format
  • Coverage, shapefile, CAD data are frequently unreadable by other software
  • Possible to export to software-independent ASCII coordinate format
  • ArcInfo Generate format
    • Simple structure
    • Easily readable by other software
  • May need accompanying tables exported to dBase or ASCII

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exporting vector datasets to arcinfo generate format points
Exporting vector datasets to ArcInfo generate format: Points
  • Simple spatial format for representing points
    • Requires a link file to convert attribute tables
    • IDs can be used to link between points and attribute tables

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exporting vector datasets to arcinfo generate format lines
Exporting vector datasets to ArcInfo generate format: Lines
  • Simple spatial format for representing lines
    • Requires a link file to convert attribute tables
    • IDs can be used to link between line segments and attribute tables

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exporting vector datasets to arcinfo generate format polygons
Exporting vector datasets to ArcInfo generate format: Polygons
  • Simple spatial format for representing polygons
    • Requires a link file for attribute tables
    • IDs can be used to link between polygons and attribute tables

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exporting tables
Exporting tables
  • Tables can be exported to “generic” formats
    • dBase
    • ASCII tab-delimited
    • INFO
  • Table subsets can be exported
    • Only selected records are exported
  • Formats readable by other applications
  • Use in spreadsheet or statistics software

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exporting tables2
Exporting tables
  • Exported tables can be opened in other applications

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exporting views and layouts
"Exporting" views and layouts
  • View and layout contents can be output to generic graphics formats
    • Enhanced Windows Metafile
    • Encapsulated PostScript - New
    • Adobe Illustrator
    • PDF
    • SVG (scalable vector graphic)
    • BMP, JPEG, PNG, GIF, TIFF
  • Graphics can be imported to other applications

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exporting views and layouts2
"Exporting" views and layouts
  • Import image files to desktop publishing applications

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exporting 3d scenes as vrml
Exporting 3D scenes as VRML
  • 3D scenes can be exported to software-independent VRML files
  • Virtual Reality Markup Language
  • ASCII format
  • Multiple files
  • Distribute via the Network
  • Viewable with standard browser plug-ins
  • Let others view 3D scenes without specialized software
  • Caution: files can become very large

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exporting 3d scenes as vrml1
Exporting 3D scenes as VRML
  • VRML can be loaded into free viewer

3D scene in ArcScene

web browser

plug-in

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exporting to kml
Exporting to KML
  • Keyhole markup language (from Google)
  • Viewable in GoogleMaps, GoogleEarth

single layer to KML

multiple layers to KML

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exporting to kml2
Exporting to KML
  • KMZ (“Z” = compressed) files can be displayed in GoogleEarth

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