tools for finding gis data on the internet purdue university erin huang graduate research assistant...
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TOOLS FOR FINDING GIS DATA ON THE INTERNET
Purdue University
Erin Huang Graduate Research AssistantPurdue [email protected]
Nicole Kong GIS Specialist, Assistant ProfessorPurdue [email protected]
IGIC @ Indianapolis, IN5/8/2014
BACKGROUND OF THE PROJECT
Public Domain Geospatial Data Exploding information Heterogeneity Highly dynamic
Spatial Information Literacy Recognize the information needs Know how to find and use the information
OUTLINESLibGuide BackgroundPurdue University LibGuideHarvest ProgramMethodologyMetadataResultsConclusions and Application
LibGuide BackgroundPurdue University LibGuideHarvest ProgramMethodologyMetadataResultsConclusions and Application
Objectives Collect public domain geospatial data Create user-friendly databases to download GIS resources Time saving
LIBGUIDE BACKGROUND
(1/3 )
Spatial Data
GeoPortal
University Lirbareies
Government Websites
Our Databases
Researchers
Students
Geoscientists
Geography Educators
Governors
Consulting firms
“LibGuides is an easy to use Content Management System used by many thousands of libraries worldwide.”----The Most Popular Web Publishing Platform for Libraries
Add, Reuse, Share
LIBGUIDE BACKGROUND
(2/3 )
Content in LibGuides
LibGuides’ API & Widgets
Websites, BlogsDiscovery, Layer Courseware, LMS
Facebook, Twitter, Social media
LIBGUIDE BACKGROUND
(3/3 )Key Words:Geospatial Data, GIS Data
Source: http://libguides.com/community.php?m=s&it=0&search=gis+data
Type Searching Interest here!
LibGuide BackgroundPurdue University LibGuideHarvest ProgramMethodologyMetadataResultsConclusions and Application
PURDUE UNIVERSITY LIBGUDE(1/2 )
U.S. State data webpage Please visit: http://
guides.lib.purdue.edu/GIS Browse U.S. State data and Theme
tags we collected for our harvest program
Files downloadable Focus on shapefile and rasters
data(tiff)
PURDUE UNIVERSITY LIBGUDE(2/2 )
Vector Data
HydrographicElevation Wetlands
Boundaries and Land ParcelEnvironmental
EnergyGeologic
SoilsNatural Hazard
StreetGeographic Names
Demographic
Th
em
e
LibGuide BackgroundPurdue University LibGuideHarvest ProgramMethodologyMetadataResultsConclusions and Application
HARVEST PROGRAM(1/1 )System Architecture
LibGuide BackgroundPurdue University LibGuideHarvest ProgramMethodologyMetadataResultsConclusions and Application
METHODOLOGY(1/2 ) My SQL
HeidiSQL is a useful and reliable tool to access MySQL database. It enables you to browse and edit data, create and edit tables, views,
procedures, triggers and scheduled events.
Manually submitted data from the 50 states and themes The system will automatically extracted downloadable files User-friendly, without crossing traditional lists The system will extract metadata simultaneously Statistics results on metadata, websites frequency showed up in other
libraries, as well as GIS states and theme data discovery results
METHODOLOGY(2/2 )
LibGuide BackgroundPurdue University LibGuideHarvest ProgramMethodologyMetadataResultsConclusions and Application
METADATA(1/ 4)
• What is Metadata?
“Metadata is critical for sharing tools, data, and maps and for searching to see if the
resources you need already exist. Metadata describes geographic information system (GIS)
resources in the same way a card in a library's card catalog describes a book. Once you've
found a resource with a search, its metadata will help you decide whether it's suitable for
your purposes. To make this decision, you may need to know how accurate or current the
resource is and if there are any restrictions on how it can be used. Metadata can answer
these questions.”----ESRI
• Support key words search in our database
Metadata Availability in 5 categories Metadata could be extracted and saved on our server (1) Metadata is included in the zip file (2) Metadata is somewhere on the web but can't be extracted in 1 (3) Metadata doesn't exist (4) URL doesn't exist (5)
METADATA(2/4 )
4%
74%
0%
12% 10%
Metadata Category Distribution
1
2
3
4
5
Metadata could be extracted and saved on our server.
Metadata is included in the zip file.
Metadata is somewhere on the web but can't be extracted in 1.
Metadata doesn't exist.
URL doesn't exist.
Metadata could be extracted and saved on our server.Metadata is included in the zip file.
Metadata is somewhere on the web but can't be extracted in 1.Metadata doesn't exist.URL doesn't exist.
METADATA(3/ 4)
METADATA(4/ 4)
1% 3%
96%
Catagory 2 Distribution
1
2
3
Metadata included in geodatabase.
txt
xml
Metadata included in geodatabase.
txt
xml
LibGuide BackgroundPurdue University LibGuideHarvest ProgramMethodologyMetadataResultsAvailable data in the United StatesConclusions and Application
RESULTS (1/5 )
Collected popular GIS data websites
and databases listed in other
libraries (Source: LibGuide Review)
MS Excel statistics
Purdue
Library
Statistics Results
RESULTS (2/5 )Themes and General Data
0
5
10
15
20
25
30
Items
Numbers
RESULTS (3/5 )
0
2
4
6
8
10
12
Items
Numbers
States Data
RESULTS (4/5 )30%
20%
38%
7% 3% 3%
National and Global Data (Themes) Dis-covery Results
1
2
3
4
5
6
Work
Dynamically generated by our system
Requires user information to send downloadable link
More than three layers
Online map (can't be downloaded)
Website out of order temporarily or has been changed
65%
13%
17% 2% 4%
GIS State Data Discovery Results
1
2
3
4
5
RESULTS (4/5)
Work
Dynamically generated by our system
Requires users information to send downloadable linkMore than three layers
Website out of order temporarily or has been changed
LibGuide BackgroundPurdue University LibGuideHarvest ProgramMethodologyMetadataResultsConclusions and Application
Explore more than 100+ GIS resources at a time User-friendly and time saving Excellent tool for your research and education
CONCLUSIONS AND APPLICATION (1/2)
CONCLUSIONS AND APPLICATION (2/2)
QUESTIONS?