View
213
Download
0
Category
Preview:
Citation preview
© Phil Hurvitz, 1999-2000
CFR 250/590 Introduction to GIS, Autumn 1999
data_export.ppt 1
Data Conversion & Export
• Overview
• Why export?
• Converting feature themes to shapefiles
• Converting image themes to grids
• Exporting grid themes to generic raster format
• Exporting feature themes to ARC/INFO generate format
• Exporting tables
• "Exporting" views and layouts
• Exporting 3D scenes as VRML_
© Phil Hurvitz, 1999-2000
CFR 250/590 Introduction to GIS, Autumn 1999
data_export.ppt 2
Data Conversion & Export
• Why export?
• Sharing data with others
• ArcView users
• Users of other software
• Integration with desktop publishing applications
• Export-and-archive _
© Phil Hurvitz, 1999-2000
CFR 250/590 Introduction to GIS, Autumn 1999
data_export.ppt 3
Data Conversion & Export
• Converting feature themes to shapefiles
• Any supported vector data source can be converted to shapefile
• Polymorphic data sources need to be converted to several shapefiles
• CAD files
• ARC/INFO coverages
• Shapefiles can be moved, copied, or archived easily & safely
• Theme subsets can be created
_
© Phil Hurvitz, 1999-2000
CFR 250/590 Introduction to GIS, Autumn 1999
data_export.ppt 4
Data Conversion & Export
• Converting image themes 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_
© Phil Hurvitz, 1999-2000
CFR 250/590 Introduction to GIS, Autumn 1999
data_export.ppt 5
Data Conversion & Export
• Exporting grid themes 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, 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
_
© Phil Hurvitz, 1999-2000
CFR 250/590 Introduction to GIS, Autumn 1999
data_export.ppt 6
Data Conversion & Export
• Exporting feature themes to ARC/INFO generate format
• Coverage, shapefile, CAD data are frequently unreadable by other software
• Possible to export to software-independent ASCII coordinate format
• ARC/INFO Generate format
• Simple structure
• Easily readable by other software
• May need accompanying tables exported to dBASE or ASCII
_
© Phil Hurvitz, 1999-2000
CFR 250/590 Introduction to GIS, Autumn 1999
data_export.ppt 7
Data Conversion & Export
• Exporting feature themes to ARC/INFO generate format: Points
© Phil Hurvitz, 1999-2000
CFR 250/590 Introduction to GIS, Autumn 1999
data_export.ppt 8
Data Conversion & Export
• Exporting feature themes to ARC/INFO generate format: Lines
© Phil Hurvitz, 1999-2000
CFR 250/590 Introduction to GIS, Autumn 1999
data_export.ppt 9
Data Conversion & Export
• Exporting feature themes to ARC/INFO generate format: Polygons
© Phil Hurvitz, 1999-2000
CFR 250/590 Introduction to GIS, Autumn 1999
data_export.ppt 10
Data Conversion & Export
• Exporting tables
• Tables can be exported to “generic” formats
• dBASE• ASCII tab-delimited• INFO
• Table subsets can be exported
• Formats readable by other applications
• Use in spreadsheet or statistics software_
© Phil Hurvitz, 1999-2000
CFR 250/590 Introduction to GIS, Autumn 1999
data_export.ppt 11
Data Conversion & Export
• "Exporting" views and layouts
• View and layout contents can be output to generic graphics formats • Placeable Windows Metafile• Windows Metafile• Windows Bitmap• Encapsulated PostScript - New• Encapsulated PostScript - Old• Adobe Illustrator• CGM Binary• CGM Character• CGM Clear Text• JPEG
• Graphics can be imported to other applications_
© Phil Hurvitz, 1999-2000
CFR 250/590 Introduction to GIS, Autumn 1999
data_export.ppt 12
Data Conversion & Export
• "Exporting" views and layouts
menu choice while view or layout is active document
specify file type,output location & name
© Phil Hurvitz, 1999-2000
CFR 250/590 Introduction to GIS, Autumn 1999
data_export.ppt 13
Data Conversion & Export
• 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_
© Phil Hurvitz, 1999-2000
CFR 250/590 Introduction to GIS, Autumn 1999
data_export.ppt 14
Data Conversion & Export
• Exporting 3D scenes as VRML
Recommended