NCSU Libraries Geospatial Data Services Jeff Essic Data Services Librarian DH Hill Library

Libraries GIS Services Data Resources –Networked –In Library Assistance –Finding & Getting Data –Using Data & Software Workstations & Software Virtual Campus Courses data/gis/

Virtual Campus Free to NCSU faculty, staff, students 80+ courses and workshops hours per course Includes exercises with provided data & software Certificate for course completion

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

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 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. - Federal data portal linked to agency data sourceshttp:// - Interactive mapping and downloadhttp://nationalatlas.gov - Cascading Map Serverhttp://nationalmap.usgs.gov

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 – –DOT data, contours, FEMA flood, ’93 aerial photos, USGS DRG’s, NCSU PrecisionAg (Soil Science) 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.

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 tigerline/index.html - Some basic tables can be downloaded here too Generate tables from - American Factfinder: ( orhttp://factfinder.census.gov/ - NC State Data Center ( - 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 DH Hill Library, Research & Information Services