M2: Oral Presentation C Thursday, 4:00 � 4:30 pm C Lake Superior Ballroom L
Map Services and More -� New Developments in Sharing Data on MetroGIS
Alison Slaats, Mark Kotz
230 East 5th Street
St. Paul, MN 55101-1626
This presentation will focus on new data and
information sharing features of the MetroGIS DataFinder web site. In particular,
we will describe and demonstrate web map services. A map service is a digital
data set that is published over the Internet. It may contain a single data layer
(e.g. imagery, roads or land use) or a collection of complimentary data layers.
Map services allow users of GIS software to access and use GIS data directly
over the web, just like any other local data set. This exciting technology makes
the sharing of GIS data easier and much more flexible. The Open GIS Consortium (OGC)
has defined a standard protocol for map services called �Web Mapping
Services� or WMS. DataFinder will use this protocol, allowing its map services
to be used by any software from any vendor that supports this independent
DataFinder is also developing a mechanism to
allow users to interactively download a user-defined area of data on the fly.
This presentation will explain the status of this initiative as well.
DataFinder (www.datafinder.org) is the MetroGIS
website that provides the mechanism for sharing GIS data between MetroGIS
participants. It currently includes features that allow users to find GIS data
and metadata quickly. DataFinder tools include a GIS data catalog and a search
engine interface that queries the MetroGIS DataFinder NSDI Clearinghouse node.
These tools provide quick access to over 70 metadata records. In addition, the
DataFinder site features online-mapping and help and resources pages.
MetroGIS (www.metrogis.org) is a collaborative organization representing over 250 local governments and other organizations. MetroGIS was established to foster sharing of geospatial data in the seven-county Twin Cities Metropolitan Area of Minnesota.