Transcript DVoyOverview

Distributed Voyager (DVoy) Web Services
http://capita.wustl.edu/dvoy_services/dvoy.aspx
Distributed Voyager (DVoy) System
Providers
Databases
Users
Voyager Web Services
SQL Tables
Layered
Map
Publish, Find, Bind
GIS Data
Vector
Time Chart
Data & Tool Catalog
Uniform Access
Web
Scatter
Chart
Images
Maintain Distributed Data;
Heterogeneous coding , access
Connect providers to users;
Homogenize data access
Select, Explore, Process,
Analyze multidimensional
data
http://capita.wustl.edu/dvoy_services/dvoy.aspx
Data & Tool Access though a Web Service Wrapper
Service
Broker
Find
Publish
Web Publish
HTTP, FTP
Service
Consumer
Service
User Chain
Access
Service
Wrapper
HTTP/FTP
Service
Ordinary web content can be delivered as a Web Service through a Proxy Server.
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The Wrapper Service converts HTTP/FTP service to XML Web service
The Wrapper Service is published as a web service to the Broker
The User finds the service from the broker and accesses the Wrapper to use the
service
Smoke Management Application
The fire emissions community needs an integrated network of data and tools
for:
• integrating disparate, heterogeneous fire emissions related data
• projecting the impact of fire emissions
• historical analysis of fire emissions
• communicating fire emissions information to agencies, researchers, and
the public
A web services based network is well suited to address these needs.
• It allows current data and tool providers to join a fire emissions network
with minimal impact on their current operations
• It provides facilities for analyzing data (observation, model output,
imagery, etc.) and generating value added information using web-based
tools
• It serves as a platform that can easily be adapted for multiple user
interfaces (e.g., simple public interface and more complex interface for fire
managers)
Current DVoy User Interface Components
Catalog: User selects among
distributed ‘wrapped’ data
Map View: Displays Selected Data
Control Panel: Provides user with
facilities to customize display
NOTE: The data sources are physically located on multiple databases across the country (NASA SQL, CIRA SQL,
NOAA SQL …) Terry, the powerplant data could be handled in a similar fashion from the EPA Oracle database
Idaho Fires Example (August 2000)
Satellite imagery and satellite
fire observations are spatially
integrated to show fire
sources and smoke transport
ASTR Fire Locations
SeaWiFS Image
showing smoke
dispersion
DVoy settings can be saved for future use.
To view a live display of Idaho fires go to:
http://capita.wustl.edu/dvoy_services/dvoy.aspx?layxml_file=IdahoFiresAug192000.xml
Idaho Fires Example (August 2000)
Derived aerosol optical depth
provides a focused look at
smoke dispersion
ASTR Fire Locations
Processed
SeaWiFS image
showing aerosol
optical depth
The SeaWiFS reflectance image is hidden to expose the
aerosol optical depth image ‘below’ it
Overlaying PM2.5 Concentration Data
PM2.5 data from
the IMPROVE and
AIRS database at
Colorado State
provide supporting
evidence for
smoke impacts
Moving the cursor over
the PM2.5 locations
shows the lat, lon, and
concentration for that
monitor
Live version at:
http://capita.wustl.edu/dvoy_services/dvoy.aspx?layxml_file=IdahoFiresWithIMPROVEAug192000.xml
Other Saved DVoy ‘Views’
These URLs link to other live views that may be of interest.
Global Fire & Aerosol Map
Idaho Smoke & Fires August 15, 2000
http://capita.wustl.edu/dvoy_services/dvoy.aspx?layxml_file=IdahoFiresAug152000.xml
Idaho Smoke & Fires August 19, 2000
http://capita.wustl.edu/dvoy_services/dvoy.aspx?layxml_file=IdahoFiresAug192000.xml
Idaho Smoke & Fires August 22, 2000
http://capita.wustl.edu/dvoy_services/dvoy.aspx?layxml_file=IdahoFiresAug222000.xml
Idaho Smoke & Fires August 25, 2000
http://capita.wustl.edu/dvoy_services/dvoy.aspx?layxml_file=IdahoFiresAug252000.xml
Idaho Fire & Smoke Aug 19, 2000 with CIRA PM2.5
http://capita.wustl.edu/dvoy_services/dvoy.aspx?layxml_file=IdahoFiresWithIMPROVEAug192000.xml
PM25 US June 27, 2001
Future Functionality
The current state of DVoy uses state-of-the art technologies in integrating
data from heterogeneous databases and web mapping tools similar to those
used in other ongoing projects such as Chaitan Baru’s I2T project and the
OpenGIS Consortium’s Interoperability Program.
Current technology allows relatively simple access and viewing of data.
Future research will extend beyond the sharing and viewing of data and will
develop new functionality for working with and processing the shared data.
New functionality currently under development include
• a time series display
• simple spatial interpolation tool for generating contour plots
These two additions will provide a proof of concept for proposing more
advanced facilities in working with fire emissions related data and tools.
DVoy and B-RAINS Interoperability
B-RAINS and DVoy will
use Open GIS Consortium
(OGC) standards to
interoperate.
B-RAINS uses ESRI
ArcIMS WebGIS which
has a built-in OGC
connector.
DVoy already has the
capability to access OGC
compliant tools and, in the
near future, will be
accessible by other OGC
compliant applications.
Bluesky
RAINS
FASTRACS
DVoy
PFIRS
(California)
Other
Fire/Smoke
Web Tools
and Portals
Other
Fire/Smoke
Data