Post on 31-Dec-2015
description
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http://gis.washington.edu/uw_gis_l/index.html
http://gis.washington.edu
Overview
• Importing data– ArcInfo interchange file
– ArcInfo generate file
– Spatial Data Transfer Standard (SDTS) files• USGS DEM (raster) data
• USGS DLG (vector) data
– DRG
Overview
• Importing data– ArcInfo interchange file– ArcInfo generate file– Spatial Data Transfer Standard (SDTS)
files• USGS DEM (raster) data• USGS DLG (vector) data
– DRG
Importing data: ArcInfo interchange file (.E00)
• ArcInfo format
• Very common file format for movement of data
• Known as “interchange,” “export,” or “E00” file
• Solves ArcInfo file system problem for data sharing
• Easy to transfer from machine to machine or across file system; easy to distribute via the Network
• Can be imported to ArcMap
Importing data: ArcInfo file structure
Files associated with an ArcInfo coverage
some of these files
are associated withthis data set
Importing data: ArcInfo file structure
• Problematic file structure for file management• Directories for ArcInfo data sets cannot be
altered, copied, or moved arbitrarily• Interchange file “packages” the coverage
directory and info files into a single file• Interchange file can be copied or moved and
then imported• Importing recreates original file structure
Importing data: ArcInfo file structure: ArcToolbox
Overview
• Importing data– ArcInfo interchange file– ArcInfo generate file– Spatial Data Transfer Standard (SDTS)
files• USGS DEM (raster) data• USGS DLG (vector) data
– DRG
ArcInfo generate file
ASCII coordinates in formatted file created by ArcInfo Workstation
ArcInfo generate file
Imported with ArcCatalog
Overview
• Importing data– ArcInfo interchange file– ArcInfo generate file– Spatial Data Transfer Standard (SDTS)
files• USGS DEM (raster) data• USGS DLG (vector) data (*.ddf)
– DRG
Importing data: SDTS files
• Spatial Data Transfer Standard
• Publicly available data sets
• Distributed by USGS in SDTS file format– USGS digital elevation model (DEM)
data
– USGS digital line graph (DLG) vector data
Importing data: SDTS files: USGS DEM data
Imported with ArcToolbox
Overview
• Importing data– ArcInfo interchange file– ArcInfo generate file– Spatial Data Transfer Standard (SDTS)
files• USGS DEM (raster) data• USGS DLG (vector) data
– DRG
Importing data: SDTS files: USGS DLG data
• Digital Line Graph (DLG)• Vector format data• Publicly available data sets• Distributed in SDTS file format• ArcInfo Workstation needed for full
conversion of SDTS to GIS data sets
Importing STDS DLG
• ArcToolbox import
limited attributes
Use ArcInfo Workstation for a full conversion
DLG to ArcInfo coverage
DLG to ArcInfo coverage
Fully converted data set has full attribute coding
Overview
• Importing data– ArcInfo interchange file– ArcInfo generate file– Spatial Data Transfer Standard (SDTS)
files• USGS DEM (raster) data• USGS DLG (vector) data
– DRG
DRG
• Digital Raster Graphic (DRG)– USGS topographic quadrangles– Scanned– Georeferenced– TIFF format
DRGDigital Raster Graphic
Homework
Read: “Data Sources” and “Data Import”
Start: Assignment 8