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NCSU Libraries Geospatial 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

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ncsu libraries geospatial data services

NCSU LibrariesGeospatial Data Services

Jeff Essic

Data Services Librarian

DH Hill Library


libraries gis services
Libraries GIS Services
  • Data Resources
    • Networked
    • In Library
  • Assistance
    • Finding & Getting Data
    • Using Data & Software
  • Workstations & Software
  • Virtual Campus Courses


virtual campus
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
popular virtual campus courses
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


  • Introduction to ArcView 3.x
  • Understanding Map Pro-

jections and Coordinate


networked data access at ncsu
Networked Data Access at NCSU
  • Geodata Server
    • Mapped drive from Windows, Mac

map to

    • FTP


    • HTTP (Web)

for off campus access, requires authentication

data distribution
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
Factors in Choosing Geospatial Data
  • Source - Fed, state, local, international, other
  • Extent - watershed, Census tract, county, state, etc.
  • Age - 1-2 years old vs. 3-7 vs. 8 or more
  • Data accuracy and scale - positional and Attribute
  • File size - How much free space do you have?
  • Attribute availability
  • Metadata availability
  • File/Image Format
  • Projection and Datum
  • Use Restrictions
federal data sources
Federal Data Sources
  • Federal data is public-domain and easily downloaded from numerous websites.
  • - Federal data portal linked to agency data sources
  • - Interactive mapping and download
  • - Cascading Map Server
state data sources
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
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.

other data sources
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
census data resources web
Census Data Resources-Web
  • Download TIGER shapefiles from tigerline/index.html

- Some basic tables can be downloaded here too

  • Generate tables from

- American Factfinder: ( or

- NC State Data Center (

- Be sure to get a geographic ID field to join your tables to the shapefiles.

recent acquisitions
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

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

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
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

Jeff Essic

Data Services Librarian


DH Hill Library, Research & Information Services