NCSU Libraries Geographic Information Systems GIS Data Services

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NCSU LibrariesGeographic Information
Systems(GIS) Data Services
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What is GIS?

• GIS Geographic Information Systems
• A collection of hardware, software, data, and
  personnel designed to acquire, store, update,
  analyze, and display geographically- referenced
  information.

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Geographic Information Systems
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GIS Services Overview
Data Collection Data Selection Issues Data
Finding Aids and Documentation Data Access
(Campus-wide) Workshops and Training Challenges
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GIS Services Overview

• Service orientation
• Not A GIS Lab
• Focus on providing services (data support) to
  users across the network in their own
  environments
• GIS data service rather than a digital mapping
  service

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Focus Time and Location Independent Access to
GIS at NCSU
Classes/ Training
Online Data
Software Access
Tech Support
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I. Data Collection

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GIS Data Collection

• Feature (Vector) data
• Digital imagery photography
• Tabular data

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State Government Data
From the State GIS Agency (Center for Geographic
Information Analysis) Over 100 different data
resources or layers (e.g. watersheds) Free to
NCSU affiliates by agreement Made available for
campus-wide access on the Libraries data server
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State Government GIS Database
Soils
River Basins
Roads
Railroads
Pipelines
Geology
Hydrography
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Local Government Data
Acquired from counties, cities, councils of
government, metropolitan planning
organizations Infrastructure, cultural and
environmental data Rapidly changing, current
data Very detailed (large scale) and
accurate Long-term preservation needs
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Local Government Data
Parking
Footprints
Elevation
Streets
Parks
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Local Government Data Acquisition Plan
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Digital Orthophoto Quarter Quadrangles (DOQQ)
DH Hill Library
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1993 Black and White Orthophotos
1998 Color Infrared Orthophotos
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SPOT Satellite Imagery
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SPOT Satellite Imagery
10 meter resolution Commercial product Statewide
coverage Campus license Campus-wide access via
data server
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Digital Raster Graphics
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Digital Raster Graphics
Digitized, georeferenced topgraphic map
sheets Available in six different formats Public
domain and value-added commercial products
available

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Tabular or Numeric Data

• Population Census
• Economic Census
• Agricultural Census
• Business Databases
• Commercial Projections
• State Data Center
• ICPSR
• Other

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Integrating Spatial Tabular Data
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II. Data Selection Issues

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Factors in Choosing Geospatial Data
Extent Data Accuracy Positional Attribute File
Format File Size Currency Concurency
File Format Projection Datum Tiling Scheme Use
Restrictions Attribute Availability Metadata
Availability Ease of Access
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Data Selection Scale Accuracy
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Data Selection Resolution 10 meter
Data Selection Resolution 1 meter
Data Selection Resolution 2 foot
Data Selection Resolution 6 inch
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Data Selection Concurrency
1993 Digital Orthophotography
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Data Selection Formats
1993 Digital Orthophotography
USGS JPEG Unclipped UTM
Und.Systems State Plane (f) BMP
USGS Unclipped BIP UTM
NCSU Libraries MrSID UTM Unclipped
NCDOT TIFF State Plane (m) Clipped
NCDOT JPEG State Plane (m) Clipped
NCSU Libraries MrSID UTM County Mosaic
NCDOT JPEG Thumbnail Clipped
BIP
MrSID
NCDOT MrSID State Plane (m) County Mosaics
TIFF
BMP
JPEG
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Data Selection Coordinate Systems
1993 Digital Orthophotography
USGS JPEG Unclipped UTM
Und.Systems State Plane (f) BMP
USGS Unclipped BIP UTM
NCSU Libraries MrSID UTM Unclipped
NCDOT TIFF State Plane (m) Clipped
NCDOT JPEG State Plane (m) Clipped
NCSU Libraries MrSID UTM County Mosaic
NCDOT JPEG Thumbnail Clipped
UTM
NCDOT MrSID State Plane (m) County Mosaics
State Plane 1983 meters
State Plane 1983 feet
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III. Data Documentation

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Data Collection Pages

• Overview and description
• Access instructions
• Metadata
• Web mapping links
• Tutorials
• Links to related resources

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Thesaurus Lookup Pages

• Lookup by feature type (e.g. roads)
• Links to broader, narrower, related terms
• Links to metadata and collection pages
• Web mapping links
• Automated, script-based page generation

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Crosswalking Metadata to MARC
GIS Users
Accidental Users
Serendipitous Discovery
Deliberate Access
GIS Index
Library Catalog
FGDC Metadata Record
MARC Record
Crosswalk
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Crosswalked Metadata in Catalog
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Clickable Map Indexes Orthophotos
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Data Selection Wizards
Help users find online data, map servers in a
time and location independent manner Walk users
through a reference interview Educate users about
data questions Present users with suitable data
resources Indicate why other resources are not
recommended Provide 24 x 7 access to specialized
reference expertise
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Planned Blue Angel MetaStar
Local Geospatial Metadata
Numeric Data Index(es)
Web Mapping Resources
MetaStar Gateway
Z39.50
External Geospatial Metadata
Custom Web Indexes
Library Catalog(s)
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IV. Data Access

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Data Access
Campus-wide networked access to Netware server
(280 gb capacity) Mapped drive FTP HTTP CD-ROM
access in reference collection Web based
mapping

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Campus-wide Data Server Access
Web

Netware Server
FTP
Mapped Drive
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Web-based Mapping

• Interact with GIS data via Web browser
• GIS access for those without
• Expensive GIS software
• GIS-capable computer equipment
• GIS expertise
• High network bandwidth
• Data storage space

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NCSU Web GIS Project Areas
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V. GIS Training

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GIS Workshops Training

• GIS Workshops
• Open to NCSU and general public
• Software and data training
• Marketing of campus GIS infrastructure
• Online GIS Training
• ESRI Virtual Campus
• Library Staff Training
• Brief training for all reference desk staff
• Additional training for selected specialists

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Online GIS Training(ESRI Virtual Campus)

• Free to NCSU faculty, staff, students
• Self-paced, Web-based instruction
• 31 courses (e.g. Spatial Analysis in
  Agriculture and Spatial Hydrology)
• 18-24 hours per course
• Home version of GIS software
• All needed data provided
• Certificate for course completion

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Online GIS Training Results in First 15 Months

• 518 registrations
• 280 unique users
• Used in 34 academic departments (in 9 colleges),
  plus 5 other academic units
• Used in 11 departmental courses (in 5 colleges)
• Over 10,800 individual instruction hours
• Less than 10 user support requests

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Online GIS Training Registrations by User
Category
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Online GIS Training Registrations by College
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V. Challenges

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GIS Data Services Challenges

• 24 x 7 user access to specialist assistance in
  data selection use
• Long term preservation and migration (media,
  format) of digital data
• Agent-based update of dynamic, virtual data
  holdings
• Leverage the physical browse environment of the
  map collection for discovery of digital data
  resources

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GIS Data Services Challenges

• Facilitate access to and storage of terrabytes of
  data
• Evolution of digital mapping services to map
  portal environment provide front-end to
  streaming, external data services
• Wrapping local context around metadata from
  diverse data sources