Data Visualization Using Standard Desktop Geographic Mapping Tools
Chris Polloni, Laura Hayes, and E.J. McFaul
This CD-ROM was developed with the intention of providing data that is compatible with Geographic Information System (GIS) tools (Polloni, 1998ab) such as Landview III (Polloni et al, 1998c), ArcExplorer (Polloni and DiGiacomo-Cohen, 1998), MapInfo and ArcView. Using latitude/longitude pairs, data from the sediment database and other sources have been used to create map layers. Each "layer" is a collection of geographic features or events such as political boundaries, a coastline, or sediment sample locations. The user can select layers (themes) with the same map projection and datum to overlay and view simultaneously. GIS tools allow spatial patterns in the data to emerge by viewing different combinations of data sets and changing the colors, symbols, or zoom level to highlight particular attributes of the data. Many of the figures contained in this publication are images saved from map windows. Offering the GIS tools and data to create custom maps, allows users to become more familiar with the data and draw their own conclusions about the environment of the Lake Pontchartrain Basin.
This CD-ROM was designed to be used on a standard portable laptop so that it could be taken into the field as a research tool. The GIS mapping tools used for this project include ArcView, ARC/INFO, ArcExplorer, MapInfo, LandView, ArcView IMS, MAPGEN, GIV, and ABICAS. We have provided the GIS software ArcExplorer version 1.1 and an accompanying ArcExplorer manual, and LandView III with manuals for LandView III Help, Guided Tour, and MARPLOT, all in PDF format on this CD-ROM. To use the LandView III software the user must open the "install\windows" directory and click on "SETUP". The Adobe Acrobat reader for viewing PDF files is also included. For the most recent version of ArcExplorer, check the ESRI website: http://www.esri.com/software/arcexplorer/index.html
DATA AND MAPPING PROCEDURES
All of the tools and data sources are available on the WWW. The following companies and government agencies have provided resources: ESRI, MapInfo, Northwood Geoscience, EPA, NOAA, CENSUS, USGS, FEMA, USCG, USACE.
Kenwood, Clifford, Manheim, F.T., Polloni, C.F., and Williams, S.J., 1996. An Environmental and Geological Bibliography for Lake Pontchartrain: U.S. Geological Survey Open-File Report 96-527, CD-ROM.
Polloni, Chris, 1998a. Mapping Tools for CDs and the web, GRIPS'98, session chair, in session listing of the SIGCAT'98 CD/DVD Conference and EXPO, Baltimore, MD, May 17-22, 1998.
Polloni, Chris, 1998b. HTML - XML: An Effective Authoring tool for today's CDs, in session listing of the SIGCAT'98 CD/DVD Conference and EXPO, Baltimore, MD, May 17-22, 1998.
Polloni, Chris and DiGiacomo-Cohen, M.L., 1998. Visualizing Long Island Sound Data Layers using Geographic Mapping Tools, in Long Island Sound Environmental Studies, Poppe, L.J. and Polloni, Chris, eds, U.S. Geological Survey Open-File Report 98-502 CD-ROM.
Polloni, C.F., Manheim, F.T., McIntire, A.G., 1998c. Interactive Electronic Publication of Chemical-Environmental Data from Lake Pontchartrain Basin: Exploration of Applications with LandView III, the New Interagency Database/Map Query system: Basics of the Basin Research Symposium, University of New Orleans, New Orleans, LA, May 12 and 13, 1998.
Polloni, Christopher, Tripp, B., and Truesdale, P., 1998d. An Illustrated Environmental Bibliography for Buzzards Bay, Massachusetts. U.S. Geological Survey Open-File Report 98-50 CD-ROM.
Polloni, C.F., Schmuck, E.A., Denny, J.F., Prisloe, M.P., and Babb, I.G., 1995. Marine Geologic Atlases on CD-ROM, A Method of Assembling, Integrating and Displaying Information: Northeastern Section GSA Abstracts with Programs, Cromwell, CT, Vol. 27, no. 1, p. 74.
U.S. Department of the Interior, U.S. Geological Survey
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