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NCSU Libraries Geospatial Data Services. Jeff Essic Data Services Librarian DH Hill Library [email protected] 515-5698. Libraries GIS Services. Data Resources Networked In Library Assistance Finding & Getting Data Using Data & Software Workstations & Software Virtual Campus Courses - PowerPoint PPT Presentation
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NCSU LibrariesGeospatial Data Services
Jeff Essic
Data Services Librarian
DH Hill Library
515-5698
Libraries GIS Services
• Data Resources– Networked– In Library
• Assistance– Finding & Getting Data– Using Data & Software
• Workstations & Software• Virtual Campus Courses• http://www.lib.ncsu.edu/data/gis/
Virtual Campus
• Free to NCSU faculty, staff, students
• 80+ courses and workshops
• 15-25 hours per course
• Includes exercises with provided data & software
• Certificate for course completion
• http://www.lib.ncsu.edu/stacks/gis/virtcamp.html
Popular Virtual Campus Courses
• Learning ArcGIS 8.x, Part I and Part II
• Learning ArcGIS Spatial Analyst
• Creating, Editing, and Managing Geodatabases
• Introduction to Visual Basic 6
• Exploring Marine Science with
ArcGIS
• Introduction to ArcView 3.x
• Understanding Map Pro-
jections and Coordinate
Systems
Networked Data Access at NCSU
• Geodata Server
– Mapped drive from Windows, Mac
map to roanoke.lib.ad.ncsu.edu
– FTP
(ftp://gisdata.lib.ncsu.edu)
– HTTP (Web)
for off campus access, requires authentication
http://www.lib.ncsu.edu/stacks/gis/geodata.html
Data Distribution
• Federally produced unclassified data is public-domain
• State, local, and commercial data are held by NCSU under distribution agreements that limit their use to NCSU affiliated users for educational purposes only.
• Distribution of data for “un-seeable” features (underground infrastructure) is being stopped for homeland security.
Factors in Choosing Geospatial Data
1. Source - Fed, state, local, international, other
2. Extent - watershed, Census tract, county, state, etc.
3. Age - 1-2 years old vs. 3-7 vs. 8 or more
4. Data accuracy and scale - positional and Attribute
5. File size - How much free space do you have?
6. Attribute availability
7. Metadata availability
8. File/Image Format
9. Projection and Datum
10. Use Restrictions
Federal Data Sources
• Federal data is public-domain and easily downloaded from numerous websites.
• http://www.geodata.gov - Federal data portal linked to agency data sources
• http://nationalatlas.gov - Interactive mapping and download
• http://nationalmap.usgs.gov - Cascading Map Server
State Data Sources
• NC Center for Geographic Info. & Analysis– Wide range of data, over 100 different layers– Scale: mostly 1:24,000 to 1:100,000– Available to NCSU via geodata server
• NC DOT– http://www.ncdot.org/planning/statewide/gis– DOT data, contours, FEMA flood, ’93 aerial photos,
USGS DRG’s,
• NCSU PrecisionAg (Soil Science)- http://www.precisionag.ncsu.edu/
- Census, DLG, NRCS soils, ’98 Color IR Orthophotos
Local Data Layers and Sources
• Typical layers include parcels, street centerlines, digital orthophotos, miscellaneous districts, zones, infrastructure, and cultural features.
• Sources:– Download from the Web– Available from the library – Acquire directly from the city/county.
http://www.lib.ncsu.edu/stacks/gis/counties.html
Feature Data Acquisition Status
Other Data Sources
• Council of Governments, Ex/ Regional open space
• Utilities
• University Faculty and Peers
• Commercial data products, usually originate from govt. sources, but are value added- Maptech- Delorme- National Geographic- Geolytics
Digital Orthophotos
Census Data Resources-Web
• Download TIGER shapefiles from
http://www.esri.com/data/download/census2000_ tigerline/index.html
- Some basic tables can be downloaded here too
• Generate tables from
- American Factfinder: (http://factfinder.census.gov/) or
- NC State Data Center (http://census.state.nc.us/)
- Be sure to get a geographic ID field to join your tables to the shapefiles.
Recent Acquisitions
• Delorme’s Xmap 4.5– Complete US coverage of DRGs
on an external hard drive, plus
3-D viewing available at DH Hill GIS workstation
• Maptech’s DigitalCharts – NOAA digitized Nautical
Charts and photos- Norfolk VA to Florida plus
Intracoastal Waterway
LIDAR
• LIght Detection And Ranging.
• Measure distance, speed, rotation, chemical composition/concentration of a remote object
• Airborne LIDAR for the flood mapping program has been collected for 2/3 of NC.
• This data can be processed for many different applications
• Symposium being planned for May 14
NC OneMap
NCFloodmaps.com
• Web Data Viewer
• Property/Flood Zone
Lookup Tool
• Data Download Tool
– flood zones
– state govt. data– local govt. data– 20 and 50ft. ASCII
digital elevation data
National Digital Information Infrastructure Program Proposal (NDIIPP)
• NDIIPP is a Library of Congress effort focused on preservation of digital resources.
• Our proposal focuses on NC state/local geospatial data partnering with CGIA.
• Try to acquire data, document it with preservation metadata, and ingest it into digital repository for long term maintenance, investigate new protocols.
• Content: feature data, imagery, digital maps, tabular
• 3 year grant--$1 million+ project, 4-6 total awards. Slim chance of us receiving, but we’re still in the running
Contact
Jeff Essic
Data Services Librarian
515-5698
DH Hill Library, Research & Information Services
http://www.lib.ncsu.edu/data/gis