310 likes | 328 Views
Explore ITOS services for expert training, technical solutions, geographic information, data processing, and application development. Access the GIST Repository for metadata services, live mapping, crowdsourcing, and custom application development.
E N D
Information Technology Outreach Services (ITOS) • Service Department • Training and Technical solutions • Geographic Information • data • services • application development Introduction
GEOGRAPHIC INFORMATION SUPPORT TEAM ITOS and the GIST Repository Data and Services Portal https://gist.itos.uga.edu GIST Portal
ITOS and the GIST Repository • Data Processing and Metadata Services • Metadata Search Engine • Downloadable WAF • Live Mapping Services (thin and thick clients) – Global Map Series • FTP • Membership Directory • Document Library GIST Portal
Data Creation and Crowdsourcing iMMAP/WFP/GISCorps
Data Modelling ETL Models
Custom Application Development UNHCR/GE
Repository Holdings: Static Maps Static Map Holdings
Repository Holdings: Vector Sets Static Map Holdings
Two problems • Find point location information from descriptive strings • Find polygons for disaster areas: admin boundaries or footprints Objective
Find location information from descriptive strings Existing Structure
First, parse out locations but maintain the unique disaster identifier Structure
Locations with unique disaster ID Structure
Gazeteer Services • Input string into Gazetter (Directories) service and return the Lat/Long (as a starting point). • Possible services • Google Earth (easiest parsing mechanism) • Bing Maps (used to be Microsoft Virtual Earth, runs on old ESRI World Gaz. Service) • Taggeo.com • Geonames.org • Maplandia • http://alexandria.ucsb.edu/gazetteer/ • http://www.columbiagazetteer.org Methods
Batch Services • There is a batch service for address geocoding in Google Earth for some countries • I have not seen a batch service for a gazeteer lookup or fly to search – may need to write a custom application (or do manually) Methods
Bing GZ Service Methods
Bing GZ Service Methods
Result, post-geocoding • After geocoding you will have a cluster of points per event, you can • export to use in an image archive search engine (footprinting) • create a minimum bounding polygon or • select within themes to highlight admin boundaries. Methods
Structure Summary (Nested Polygons) Structure
Structure Summary (Attribution) Structure
Level 0 (Country Level) Existing
Level 1 Missing
Level 2 This list of 37 countries come from the GAUL website; we assume that Level 2 boundaries exist for these countries. GAUL has level 2 data for all other countries which have level 2 divisions. Missing
Level 2 – 106 Missing from GM, 37 Missing from GAUL* Missing
Level 3 GM has 16 level 3 datasets that GAUL does not have GAUL has 7 level 3 datasets that GM does not have Existing
Level 3 –GM and GAUL 16 level 3 datasets in GM missing from GAUL 7 level 3 datasets in GAUL missing from GM Existing
Levels 4 and 5 GM has 2 level 4 datasets that GAUL does not have Both GM and GAUL have Kenya as the only country represented with level 5 divisions Existing
Level 4 – 2 level 4 datasets in GM missing from GAUL Existing
Settlements and Urban Areas Existing