NCSU Libraries Geospatial Data Services Jeff Essic Data

NCSU Libraries Geospatial Data Services Jeff Essic Data Services Librarian DH Hill Library jeff_essic@ncsu. edu 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 Arc. GIS 8. x, Part I and Part II Learning Arc. GIS Spatial Analyst Creating, Editing, and Managing Geodatabases Introduction to Visual Basic 6 Exploring Marine Science with Arc. GIS • Introduction to Arc. View 3. x • Understanding Map Projections 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 publicdomain • 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 Precision. Ag (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/census 2000_ 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 Digital. Charts – 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 One. Map

NCFloodmaps. com • Web Data Viewer • Property/Flood Zone Lookup Tool • Data Download Tool – flood zones – state govt. data – local govt. data – 20 and 50 ft. 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 jeff_essic@ncsu. edu 515 -5698 DH Hill Library, Research & Information Services http: //www. lib. ncsu. edu/data/gis